TMUX(1)                    BSD General Commands Manual                   TMUX(1)

     tmux — terminal multiplexer

     tmux [-2CluvV] [-c shell-command] [-f file] [-L socket-name]
          [-S socket-path] [command [flags]]

     tmux is a terminal multiplexer: it enables a number of terminals to be
     created, accessed, and controlled from a single screen.  tmux may be
     detached from a screen and continue running in the background, then later

     When tmux is started it creates a new session with a single window and
     displays it on screen.  A status line at the bottom of the screen shows
     information on the current session and is used to enter interactive

     A session is a single collection of pseudo terminals under the management
     of tmux.  Each session has one or more windows linked to it.  A window
     occupies the entire screen and may be split into rectangular panes, each of
     which is a separate pseudo terminal (the pty(4) manual page documents the
     technical details of pseudo terminals).  Any number of tmux instances may
     connect to the same session, and any number of windows may be present in
     the same session.  Once all sessions are killed, tmux exits.

     Each session is persistent and will survive accidental disconnection (such
     as ssh(1) connection timeout) or intentional detaching (with the ‘C-b d’
     key strokes).  tmux may be reattached using:

           $ tmux attach

     In tmux, a session is displayed on screen by a client and all sessions are
     managed by a single server.  The server and each client are separate
     processes which communicate through a socket in /tmp.

     The options are as follows:

     -2            Force tmux to assume the terminal supports 256 colours.

     -C            Start in control mode (see the CONTROL MODE section).  Given
                   twice (-CC) disables echo.

     -c shell-command
                   Execute shell-command using the default shell.  If necessary,
                   the tmux server will be started to retrieve the default-shell
                   option.  This option is for compatibility with sh(1) when
                   tmux is used as a login shell.

     -f file       Specify an alternative configuration file.  By default, tmux
                   loads the system configuration file from /etc/tmux.conf, if
                   present, then looks for a user configuration file at

                   The configuration file is a set of tmux commands which are
                   executed in sequence when the server is first started.  tmux
                   loads configuration files once when the server process has
                   started.  The source-file command may be used to load a file

                   tmux shows any error messages from commands in configuration
                   files in the first session created, and continues to process
                   the rest of the configuration file.

     -L socket-name
                   tmux stores the server socket in a directory under
                   TMUX_TMPDIR or /tmp if it is unset.  The default socket is
                   named default.  This option allows a different socket name to
                   be specified, allowing several independent tmux servers to be
                   run.  Unlike -S a full path is not necessary: the sockets are
                   all created in the same directory.

                   If the socket is accidentally removed, the SIGUSR1 signal may
                   be sent to the tmux server process to recreate it (note that
                   this will fail if any parent directories are missing).

     -l            Behave as a login shell.  This flag currently has no effect
                   and is for compatibility with other shells when using tmux as
                   a login shell.

     -S socket-path
                   Specify a full alternative path to the server socket.  If -S
                   is specified, the default socket directory is not used and
                   any -L flag is ignored.

     -u            When starting, tmux looks for the LC_ALL, LC_CTYPE and LANG
                   environment variables: if the first found contains ‘UTF-8’,
                   then the terminal is assumed to support UTF-8.  This is not
                   always correct: the -u flag explicitly informs tmux that
                   UTF-8 is supported.

                   Note that tmux itself always accepts UTF-8; this controls
                   whether it will send UTF-8 characters to the terminal it is
                   running (if not, they are replaced by ‘_’).

     -v            Request verbose logging.  Log messages will be saved into
                   tmux-client-PID.log and tmux-server-PID.log files in the
                   current directory, where PID is the PID of the server or
                   client process.  If -v is specified twice, an additional
                   tmux-out-PID.log file is generated with a copy of everything
                   tmux writes to the terminal.

                   The SIGUSR2 signal may be sent to the tmux server process to
                   toggle logging between on (as if -v was given) and off.

     -V            Report the tmux version.

     command [flags]
                   This specifies one of a set of commands used to control tmux,
                   as described in the following sections.  If no commands are
                   specified, the new-session command is assumed.

     tmux may be controlled from an attached client by using a key combination
     of a prefix key, ‘C-b’ (Ctrl-b) by default, followed by a command key.

     The default command key bindings are:

           C-b         Send the prefix key (C-b) through to the application.
           C-o         Rotate the panes in the current window forwards.
           C-z         Suspend the tmux client.
           !           Break the current pane out of the window.
           "           Split the current pane into two, top and bottom.
           #           List all paste buffers.
           $           Rename the current session.
           %           Split the current pane into two, left and right.
           &           Kill the current window.
           '           Prompt for a window index to select.
           (           Switch the attached client to the previous session.
           )           Switch the attached client to the next session.
           ,           Rename the current window.
           -           Delete the most recently copied buffer of text.
           .           Prompt for an index to move the current window.
           0 to 9      Select windows 0 to 9.
           :           Enter the tmux command prompt.
           ;           Move to the previously active pane.
           =           Choose which buffer to paste interactively from a list.
           ?           List all key bindings.
           D           Choose a client to detach.
           L           Switch the attached client back to the last session.
           [           Enter copy mode to copy text or view the history.
           ]           Paste the most recently copied buffer of text.
           c           Create a new window.
           d           Detach the current client.
           f           Prompt to search for text in open windows.
           i           Display some information about the current window.
           l           Move to the previously selected window.
           n           Change to the next window.
           o           Select the next pane in the current window.
           p           Change to the previous window.
           q           Briefly display pane indexes.
           r           Force redraw of the attached client.
           m           Mark the current pane (see select-pane -m).
           M           Clear the marked pane.
           s           Select a new session for the attached client
           t           Show the time.
           w           Choose the current window interactively.
           x           Kill the current pane.
           z           Toggle zoom state of the current pane.
           {           Swap the current pane with the previous pane.
           }           Swap the current pane with the next pane.
           ~           Show previous messages from tmux, if any.
           Page Up     Enter copy mode and scroll one page up.
           Up, Down
           Left, Right
                       Change to the pane above, below, to the left, or to the
                       right of the current pane.
           M-1 to M-5  Arrange panes in one of the five preset layouts: even-
                       horizontal, even-vertical, main-horizontal, main-
                       vertical, or tiled.
           Space       Arrange the current window in the next preset layout.
           M-n         Move to the next window with a bell or activity marker.
           M-o         Rotate the panes in the current window backwards.
           M-p         Move to the previous window with a bell or activity
           C-Up, C-Down
           C-Left, C-Right
                       Resize the current pane in steps of one cell.
           M-Up, M-Down
           M-Left, M-Right
                       Resize the current pane in steps of five cells.

     Key bindings may be changed with the bind-key and unbind-key commands.

     This section contains a list of the commands supported by tmux.  Most
     commands accept the optional -t (and sometimes -s) argument with one of
     target-client, target-session target-window, or target-pane.  These specify
     the client, session, window or pane which a command should affect.

     target-client should be the name of the client, typically the pty(4) file
     to which the client is connected, for example either of /dev/ttyp1 or ttyp1
     for the client attached to /dev/ttyp1.  If no client is specified, tmux
     attempts to work out the client currently in use; if that fails, an error
     is reported.  Clients may be listed with the list-clients command.

     target-session is tried as, in order:

           1.   A session ID prefixed with a $.

           2.   An exact name of a session (as listed by the list-sessions

           3.   The start of a session name, for example ‘mysess’ would match a
                session named ‘mysession’.

           4.   An fnmatch(3) pattern which is matched against the session name.

     If the session name is prefixed with an ‘=’, only an exact match is
     accepted (so ‘=mysess’ will only match exactly ‘mysess’, not ‘mysession’).

     If a single session is found, it is used as the target session; multiple
     matches produce an error.  If a session is omitted, the current session is
     used if available; if no current session is available, the most recently
     used is chosen.

     target-window (or src-window or dst-window) specifies a window in the form
     session:window.  session follows the same rules as for target-session, and
     window is looked for in order as:

           1.   A special token, listed below.

           2.   A window index, for example ‘mysession:1’ is window 1 in session

           3.   A window ID, such as @1.

           4.   An exact window name, such as ‘mysession:mywindow’.

           5.   The start of a window name, such as ‘mysession:mywin’.

           6.   As an fnmatch(3) pattern matched against the window name.

     Like sessions, a ‘=’ prefix will do an exact match only.  An empty window
     name specifies the next unused index if appropriate (for example the
     new-window and link-window commands) otherwise the current window in
     session is chosen.

     The following special tokens are available to indicate particular windows.
     Each has a single-character alternative form.

     Token              Meaning
     {start}       ^    The lowest-numbered window
     {end}         $    The highest-numbered window
     {last}        !    The last (previously current) window
     {next}        +    The next window by number
     {previous}    -    The previous window by number

     target-pane (or src-pane or dst-pane) may be a pane ID or takes a similar
     form to target-window but with the optional addition of a period followed
     by a pane index or pane ID, for example: ‘mysession:mywindow.1’.  If the
     pane index is omitted, the currently active pane in the specified window is
     used.  The following special tokens are available for the pane index:

     Token                  Meaning
     {last}            !    The last (previously active) pane
     {next}            +    The next pane by number
     {previous}        -    The previous pane by number
     {top}                  The top pane
     {bottom}               The bottom pane
     {left}                 The leftmost pane
     {right}                The rightmost pane
     {top-left}             The top-left pane
     {top-right}            The top-right pane
     {bottom-left}          The bottom-left pane
     {bottom-right}         The bottom-right pane
     {up-of}                The pane above the active pane
     {down-of}              The pane below the active pane
     {left-of}              The pane to the left of the active pane
     {right-of}             The pane to the right of the active pane

     The tokens ‘+’ and ‘-’ may be followed by an offset, for example:

           select-window -t:+2

     In addition, target-session, target-window or target-pane may consist
     entirely of the token ‘{mouse}’ (alternative form ‘=’) to specify the most
     recent mouse event (see the MOUSE SUPPORT section) or ‘{marked}’
     (alternative form ‘~’) to specify the marked pane (see select-pane -m).

     Sessions, window and panes are each numbered with a unique ID; session IDs
     are prefixed with a ‘$’, windows with a ‘@’, and panes with a ‘%’.  These
     are unique and are unchanged for the life of the session, window or pane in
     the tmux server.  The pane ID is passed to the child process of the pane in
     the TMUX_PANE environment variable.  IDs may be displayed using the
     ‘session_id’, ‘window_id’, or ‘pane_id’ formats (see the FORMATS section)
     and the display-message, list-sessions, list-windows or list-panes

     shell-command arguments are sh(1) commands.  This may be a single argument
     passed to the shell, for example:

           new-window 'vi /etc/passwd'

     Will run:

           /bin/sh -c 'vi /etc/passwd'

     Additionally, the new-window, new-session, split-window, respawn-window and
     respawn-pane commands allow shell-command to be given as multiple arguments
     and executed directly (without ‘sh -c’).  This can avoid issues with shell
     quoting.  For example:

           $ tmux new-window vi /etc/passwd

     Will run vi(1) directly without invoking the shell.

     command [arguments] refers to a tmux command, passed with the command and
     arguments separately, for example:

           bind-key F1 set-option status off

     Or if using sh(1):

           $ tmux bind-key F1 set-option status off

     Multiple commands may be specified together as part of a command sequence.
     Each command should be separated by spaces and a semicolon; commands are
     executed sequentially from left to right and lines ending with a backslash
     continue on to the next line, except when escaped by another backslash.  A
     literal semicolon may be included by escaping it with a backslash (for
     example, when specifying a command sequence to bind-key).

     Example tmux commands include:

           refresh-client -t/dev/ttyp2

           rename-session -tfirst newname

           set-window-option -t:0 monitor-activity on

           new-window ; split-window -d

           bind-key R source-file ~/.tmux.conf \; \
                   display-message "source-file done"

     Or from sh(1):

           $ tmux kill-window -t :1

           $ tmux new-window \; split-window -d

           $ tmux new-session -d 'vi /etc/passwd' \; split-window -d \; attach

     The tmux server manages clients, sessions, windows and panes.  Clients are
     attached to sessions to interact with them, either when they are created
     with the new-session command, or later with the attach-session command.
     Each session has one or more windows linked into it.  Windows may be linked
     to multiple sessions and are made up of one or more panes, each of which
     contains a pseudo terminal.  Commands for creating, linking and otherwise
     manipulating windows are covered in the WINDOWS AND PANES section.

     The following commands are available to manage clients and sessions:

     attach-session [-dEr] [-c working-directory] [-t target-session]
                   (alias: attach)
             If run from outside tmux, create a new client in the current
             terminal and attach it to target-session.  If used from inside,
             switch the current client.  If -d is specified, any other clients
             attached to the session are detached.  -r signifies the client is
             read-only (only keys bound to the detach-client or switch-client
             commands have any effect)

             If no server is started, attach-session will attempt to start it;
             this will fail unless sessions are created in the configuration

             The target-session rules for attach-session are slightly adjusted:
             if tmux needs to select the most recently used session, it will
             prefer the most recently used unattached session.

             -c will set the session working directory (used for new windows) to

             If -E is used, the update-environment option will not be applied.

     detach-client [-aP] [-E shell-command] [-s target-session] [-t
                   (alias: detach)
             Detach the current client if bound to a key, the client specified
             with -t, or all clients currently attached to the session specified
             by -s.  The -a option kills all but the client given with -t.  If
             -P is given, send SIGHUP to the parent process of the client,
             typically causing it to exit.  With -E, run shell-command to
             replace the client.

     has-session [-t target-session]
                   (alias: has)
             Report an error and exit with 1 if the specified session does not
             exist.  If it does exist, exit with 0.

             Kill the tmux server and clients and destroy all sessions.

     kill-session [-aC] [-t target-session]
             Destroy the given session, closing any windows linked to it and no
             other sessions, and detaching all clients attached to it.  If -a is
             given, all sessions but the specified one is killed.  The -C flag
             clears alerts (bell, activity, or silence) in all windows linked to
             the session.

     list-clients [-F format] [-t target-session]
                   (alias: lsc)
             List all clients attached to the server.  For the meaning of the -F
             flag, see the FORMATS section.  If target-session is specified,
             list only clients connected to that session.

     list-commands [-F format]
                   (alias: lscm)
             List the syntax of all commands supported by tmux.

     list-sessions [-F format]
                   (alias: ls)
             List all sessions managed by the server.  For the meaning of the -F
             flag, see the FORMATS section.

     lock-client [-t target-client]
                   (alias: lockc)
             Lock target-client, see the lock-server command.

     lock-session [-t target-session]
                   (alias: locks)
             Lock all clients attached to target-session.

     new-session [-AdDEP] [-c start-directory] [-F format] [-n window-name] [-s
             session-name] [-t group-name] [-x width] [-y height]
                   (alias: new)
             Create a new session with name session-name.

             The new session is attached to the current terminal unless -d is
             given.  window-name and shell-command are the name of and shell
             command to execute in the initial window.  With -d, the initial
             size comes from the global default-size option; -x and -y can be
             used to specify a different size.  ‘-’ uses the size of the current
             client if any.  If -x or -y is given, the default-size option is
             set for the session.

             If run from a terminal, any termios(4) special characters are saved
             and used for new windows in the new session.

             The -A flag makes new-session behave like attach-session if
             session-name already exists; in this case, -D behaves like -d to

             If -t is given, it specifies a session group.  Sessions in the same
             group share the same set of windows - new windows are linked to all
             sessions in the group and any windows closed removed from all
             sessions.  The current and previous window and any session options
             remain independent and any session in a group may be killed without
             affecting the others.  The group-name argument may be:

             1.      the name of an existing group, in which case the new
                     session is added to that group;

             2.      the name of an existing session - the new session is added
                     to the same group as that session, creating a new group if

             3.      the name for a new group containing only the new session.

             -n and shell-command are invalid if -t is used.

             The -P option prints information about the new session after it has
             been created.  By default, it uses the format ‘#{session_name}:’
             but a different format may be specified with -F.

             If -E is used, the update-environment option will not be applied.

     refresh-client [-cDlLRSU] [-C width,height] [-t target-client] [adjustment]
                   (alias: refresh)
             Refresh the current client if bound to a key, or a single client if
             one is given with -t.  If -S is specified, only update the client's
             status line.

             The -U, -D, -L -R, and -c flags allow the visible portion of a
             window which is larger than the client to be changed.  -U moves the
             visible part up by adjustment rows and -D down, -L left by
             adjustment columns and -R right.  -c returns to tracking the cursor
             automatically.  If adjustment is omitted, 1 is used.  Note that the
             visible position is a property of the client not of the window,
             changing the current window in the attached session will reset it.

             -C sets the width and height of a control client.  -l requests the
             clipboard from the client using the xterm(1) escape sequence and
             stores it in a new paste buffer.

             -L, -R, -U and -D move the visible portion of the window left,
             right, up or down by adjustment, if the window is larger than the
             client.  -c resets so that the position follows the cursor.  See
             the window-size option.

     rename-session [-t target-session] new-name
                   (alias: rename)
             Rename the session to new-name.

     show-messages [-JT] [-t target-client]
                   (alias: showmsgs)
             Show client messages or server information.  Any messages displayed
             on the status line are saved in a per-client message log, up to a
             maximum of the limit set by the message-limit server option.  With
             -t, display the log for target-client.  -J and -T show debugging
             information about jobs and terminals.

     source-file [-q] path
                   (alias: source)
             Execute commands from path (which may be a glob(7) pattern).  If -q
             is given, no error will be returned if path does not exist.

             Within a configuration file, commands may be made conditional by
             surrounding them with %if and %endif lines.  Additional %elif and
             %else lines may also be used.  The argument to %if and %elif is
             expanded as a format and if it evaluates to false (zero or empty),
             subsequent lines are ignored until the next %elif, %else or %endif.
             For example:

                   %if #{==:#{host},myhost}
                   set -g status-style bg=red
                   %elif #{==:#{host},myotherhost}
                   set -g status-style bg=green
                   set -g status-style bg=blue

             Will change the status line to red if running on ‘myhost’, green if
             running on ‘myotherhost’, or blue if running on another host.

                   (alias: start)
             Start the tmux server, if not already running, without creating any

     suspend-client [-t target-client]
                   (alias: suspendc)
             Suspend a client by sending SIGTSTP (tty stop).

     switch-client [-Elnpr] [-c target-client] [-t target-session] [-T
                   (alias: switchc)
             Switch the current session for client target-client to
             target-session.  If -l, -n or -p is used, the client is moved to
             the last, next or previous session respectively.  -r toggles
             whether a client is read-only (see the attach-session command).

             If -E is used, update-environment option will not be applied.

             -T sets the client's key table; the next key from the client will
             be interpreted from key-table.  This may be used to configure
             multiple prefix keys, or to bind commands to sequences of keys.
             For example, to make typing ‘abc’ run the list-keys command:

                   bind-key -Ttable2 c list-keys
                   bind-key -Ttable1 b switch-client -Ttable2
                   bind-key -Troot   a switch-client -Ttable1

     A tmux window may be in one of two modes.  The default permits direct
     access to the terminal attached to the window.  The other is copy mode,
     which permits a section of a window or its history to be copied to a paste
     buffer for later insertion into another window.  This mode is entered with
     the copy-mode command, bound to ‘[’ by default.  It is also entered when a
     command that produces output, such as list-keys, is executed from a key

     Commands are sent to copy mode using the -X flag to the send-keys command.
     When a key is pressed, copy mode automatically uses one of two key tables,
     depending on the mode-keys option: copy-mode for emacs, or copy-mode-vi for
     vi.  Key tables may be viewed with the list-keys command.

     The following commands are supported in copy mode:

           Command                              vi              emacs
           append-selection-and-cancel          A
           back-to-indentation                  ^               M-m
           begin-selection                      Space           C-Space
           bottom-line                          L
           cancel                               q               Escape
           clear-selection                      Escape          C-g
           copy-end-of-line                     D               C-k
           copy-pipe <command>
           copy-pipe-and-cancel <command>
           copy-selection-and-cancel            Enter           M-w
           cursor-down                          j               Down
           cursor-left                          h               Left
           cursor-right                         l               Right
           cursor-up                            k               Up
           end-of-line                          $               C-e
           goto-line <line>                     :               g
           halfpage-down                        C-d             M-Down
           halfpage-up                          C-u             M-Up
           history-bottom                       G               M->
           history-top                          g               M-<
           jump-again                           ;               ;
           jump-backward <to>                   F               F
           jump-forward <to>                    f               f
           jump-reverse                         ,               ,
           jump-to-backward <to>                T
           jump-to-forward <to>                 t
           middle-line                          M               M-r
           next-paragraph                       }               M-}
           next-space                           W
           next-space-end                       E
           next-word                            w
           next-word-end                        e               M-f
           other-end                            o
           page-down                            C-f             PageDown
           page-up                              C-b             PageUp
           previous-paragraph                   {               M-{
           previous-space                       B
           previous-word                        b               M-b
           rectangle-toggle                     v               R
           scroll-down                          C-e             C-Down
           scroll-up                            C-y             C-Up
           search-again                         n               n
           search-backward <for>                ?
           search-forward <for>                 /
           search-backward-incremental <for>                    C-r
           search-forward-incremental <for>                     C-s
           search-reverse                       N               N
           select-line                          V
           start-of-line                        0               C-a
           top-line                             H               M-R

     The ‘-and-cancel’ variants of some commands exit copy mode after they have
     completed (for copy commands) or when the cursor reaches the bottom (for
     scrolling commands).

     The next and previous word keys use space and the ‘-’, ‘_’ and ‘@’
     characters as word delimiters by default, but this can be adjusted by
     setting the word-separators session option.  Next word moves to the start
     of the next word, next word end to the end of the next word and previous
     word to the start of the previous word.  The three next and previous space
     keys work similarly but use a space alone as the word separator.

     The jump commands enable quick movement within a line.  For instance,
     typing ‘f’ followed by ‘/’ will move the cursor to the next ‘/’ character
     on the current line.  A ‘;’ will then jump to the next occurrence.

     Commands in copy mode may be prefaced by an optional repeat count.  With vi
     key bindings, a prefix is entered using the number keys; with emacs, the
     Alt (meta) key and a number begins prefix entry.

     The synopsis for the copy-mode command is:

     copy-mode [-Meu] [-t target-pane]
             Enter copy mode.  The -u option scrolls one page up.  -M begins a
             mouse drag (only valid if bound to a mouse key binding, see MOUSE
             SUPPORT).  -e specifies that scrolling to the bottom of the history
             (to the visible screen) should exit copy mode.  While in copy mode,
             pressing a key other than those used for scrolling will disable
             this behaviour.  This is intended to allow fast scrolling through a
             pane's history, for example with:

                   bind PageUp copy-mode -eu

     Each window displayed by tmux may be split into one or more panes; each
     pane takes up a certain area of the display and is a separate terminal.  A
     window may be split into panes using the split-window command.  Windows may
     be split horizontally (with the -h flag) or vertically.  Panes may be
     resized with the resize-pane command (bound to ‘C-Up’, ‘C-Down’ ‘C-Left’
     and ‘C-Right’ by default), the current pane may be changed with the
     select-pane command and the rotate-window and swap-pane commands may be
     used to swap panes without changing their position.  Panes are numbered
     beginning from zero in the order they are created.

     A number of preset layouts are available.  These may be selected with the
     select-layout command or cycled with next-layout (bound to ‘Space’ by
     default); once a layout is chosen, panes within it may be moved and resized
     as normal.

     The following layouts are supported:

             Panes are spread out evenly from left to right across the window.

             Panes are spread evenly from top to bottom.

             A large (main) pane is shown at the top of the window and the
             remaining panes are spread from left to right in the leftover space
             at the bottom.  Use the main-pane-height window option to specify
             the height of the top pane.

             Similar to main-horizontal but the large pane is placed on the left
             and the others spread from top to bottom along the right.  See the
             main-pane-width window option.

     tiled   Panes are spread out as evenly as possible over the window in both
             rows and columns.

     In addition, select-layout may be used to apply a previously used layout -
     the list-windows command displays the layout of each window in a form
     suitable for use with select-layout.  For example:

           $ tmux list-windows
           0: ksh [159x48]
               layout: bb62,159x48,0,0{79x48,0,0,79x48,80,0}
           $ tmux select-layout bb62,159x48,0,0{79x48,0,0,79x48,80,0}

     tmux automatically adjusts the size of the layout for the current window
     size.  Note that a layout cannot be applied to a window with more panes
     than that from which the layout was originally defined.

     Commands related to windows and panes are as follows:

     break-pane [-dP] [-F format] [-n window-name] [-s src-pane] [-t dst-window]
                   (alias: breakp)
             Break src-pane off from its containing window to make it the only
             pane in dst-window.  If -d is given, the new window does not become
             the current window.  The -P option prints information about the new
             window after it has been created.  By default, it uses the format
             ‘#{session_name}:#{window_index}’ but a different format may be
             specified with -F.

     capture-pane [-aepPqCJ] [-b buffer-name] [-E end-line] [-S start-line] [-t
                   (alias: capturep)
             Capture the contents of a pane.  If -p is given, the output goes to
             stdout, otherwise to the buffer specified with -b or a new buffer
             if omitted.  If -a is given, the alternate screen is used, and the
             history is not accessible.  If no alternate screen exists, an error
             will be returned unless -q is given.  If -e is given, the output
             includes escape sequences for text and background attributes.  -C
             also escapes non-printable characters as octal \xxx.  -J joins
             wrapped lines and preserves trailing spaces at each line's end.  -P
             captures only any output that the pane has received that is the
             beginning of an as-yet incomplete escape sequence.

             -S and -E specify the starting and ending line numbers, zero is the
             first line of the visible pane and negative numbers are lines in
             the history.  ‘-’ to -S is the start of the history and to -E the
             end of the visible pane.  The default is to capture only the
             visible contents of the pane.

     choose-client [-NZ] [-F format] [-f filter] [-O sort-order] [-t
             target-pane] [template]
             Put a pane into client mode, allowing a client to be selected
             interactively from a list.  -Z zooms the pane.  The following keys
             may be used in client mode:

                   Key    Function
                   Enter  Choose selected client
                   Up     Select previous client
                   Down   Select next client
                   C-s    Search by name
                   n      Repeat last search
                   t      Toggle if client is tagged
                   T      Tag no clients
                   C-t    Tag all clients
                   d      Detach selected client
                   D      Detach tagged clients
                   x      Detach and HUP selected client
                   X      Detach and HUP tagged clients
                   z      Suspend selected client
                   Z      Suspend tagged clients
                   f      Enter a format to filter items
                   O      Change sort order
                   v      Toggle preview
                   q      Exit mode

             After a client is chosen, ‘%%’ is replaced by the client name in
             template and the result executed as a command.  If template is not
             given, "detach-client -t '%%'" is used.

             -O specifies the initial sort order: one of ‘name’, ‘size’,
             ‘creation’, or ‘activity’.  -f specifies an initial filter: the
             filter is a format - if it evaluates to zero, the item in the list
             is not shown, otherwise it is shown.  If a filter would lead to an
             empty list, it is ignored.  -F specifies the format for each item
             in the list.  -N starts without the preview.  This command works
             only if at least one client is attached.

     choose-tree [-GNswZ] [-F format] [-f filter] [-O sort-order] [-t
             target-pane] [template]
             Put a pane into tree mode, where a session, window or pane may be
             chosen interactively from a list.  -s starts with sessions
             collapsed and -w with windows collapsed.  -Z zooms the pane.  The
             following keys may be used in tree mode:

                   Key    Function
                   Enter  Choose selected item
                   Up     Select previous item
                   Down   Select next item
                   x      Kill selected item
                   X      Kill tagged items
                   <      Scroll list of previews left
                   >      Scroll list of previews right
                   C-s    Search by name
                   n      Repeat last search
                   t      Toggle if item is tagged
                   T      Tag no items
                   C-t    Tag all items
                   :      Run a command for each tagged item
                   f      Enter a format to filter items
                   O      Change sort order
                   v      Toggle preview
                   q      Exit mode

             After a session, window or pane is chosen, ‘%%’ is replaced by the
             target in template and the result executed as a command.  If
             template is not given, "switch-client -t '%%'" is used.

             -O specifies the initial sort order: one of ‘index’, ‘name’, or
             ‘time’.  -f specifies an initial filter: the filter is a format -
             if it evaluates to zero, the item in the list is not shown,
             otherwise it is shown.  If a filter would lead to an empty list, it
             is ignored.  -F specifies the format for each item in the tree.  -N
             starts without the preview.  -G includes all sessions in any
             session groups in the tree rather than only the first.  This
             command works only if at least one client is attached.

     display-panes [-b] [-d duration] [-t target-client] [template]
                   (alias: displayp)
             Display a visible indicator of each pane shown by target-client.
             See the display-panes-colour and display-panes-active-colour
             session options.  The indicator is closed when a key is pressed or
             duration milliseconds have passed.  If -d is not given,
             display-panes-time is used.  A duration of zero means the indicator
             stays until a key is pressed.  While the indicator is on screen, a
             pane may be chosen with the ‘0’ to ‘9’ keys, which will cause
             template to be executed as a command with ‘%%’ substituted by the
             pane ID.  The default template is "select-pane -t '%%'".  With -b,
             other commands are not blocked from running until the indicator is

     find-window [-CNTZ] [-t target-pane] match-string
                   (alias: findw)
             Search for the fnmatch(3) pattern match-string in window names,
             titles, and visible content (but not history).  The flags control
             matching behavior: -C matches only visible window contents, -N
             matches only the window name and -T matches only the window title.
             The default is -CNT.  -Z zooms the pane.

             This command works only if at least one client is attached.

     join-pane [-bdhv] [-l size | -p percentage] [-s src-pane] [-t dst-pane]
                   (alias: joinp)
             Like split-window, but instead of splitting dst-pane and creating a
             new pane, split it and move src-pane into the space.  This can be
             used to reverse break-pane.  The -b option causes src-pane to be
             joined to left of or above dst-pane.

             If -s is omitted and a marked pane is present (see select-pane -m),
             the marked pane is used rather than the current pane.

     kill-pane [-a] [-t target-pane]
                   (alias: killp)
             Destroy the given pane.  If no panes remain in the containing
             window, it is also destroyed.  The -a option kills all but the pane
             given with -t.

     kill-window [-a] [-t target-window]
                   (alias: killw)
             Kill the current window or the window at target-window, removing it
             from any sessions to which it is linked.  The -a option kills all
             but the window given with -t.

     last-pane [-de] [-t target-window]
                   (alias: lastp)
             Select the last (previously selected) pane.  -e enables or -d
             disables input to the pane.

     last-window [-t target-session]
                   (alias: last)
             Select the last (previously selected) window.  If no target-session
             is specified, select the last window of the current session.

     link-window [-adk] [-s src-window] [-t dst-window]
                   (alias: linkw)
             Link the window at src-window to the specified dst-window.  If
             dst-window is specified and no such window exists, the src-window
             is linked there.  With -a, the window is moved to the next index up
             (following windows are moved if necessary).  If -k is given and
             dst-window exists, it is killed, otherwise an error is generated.
             If -d is given, the newly linked window is not selected.

     list-panes [-as] [-F format] [-t target]
                   (alias: lsp)
             If -a is given, target is ignored and all panes on the server are
             listed.  If -s is given, target is a session (or the current
             session).  If neither is given, target is a window (or the current
             window).  For the meaning of the -F flag, see the FORMATS section.

     list-windows [-a] [-F format] [-t target-session]
                   (alias: lsw)
             If -a is given, list all windows on the server.  Otherwise, list
             windows in the current session or in target-session.  For the
             meaning of the -F flag, see the FORMATS section.

     move-pane [-bdhv] [-l size | -p percentage] [-s src-pane] [-t dst-pane]
                   (alias: movep)
             Like join-pane, but src-pane and dst-pane may belong to the same

     move-window [-ardk] [-s src-window] [-t dst-window]
                   (alias: movew)
             This is similar to link-window, except the window at src-window is
             moved to dst-window.  With -r, all windows in the session are
             renumbered in sequential order, respecting the base-index option.

     new-window [-adkP] [-c start-directory] [-F format] [-n window-name] [-t
             target-window] [shell-command]
                   (alias: neww)
             Create a new window.  With -a, the new window is inserted at the
             next index up from the specified target-window, moving windows up
             if necessary, otherwise target-window is the new window location.

             If -d is given, the session does not make the new window the
             current window.  target-window represents the window to be created;
             if the target already exists an error is shown, unless the -k flag
             is used, in which case it is destroyed.  shell-command is the
             command to execute.  If shell-command is not specified, the value
             of the default-command option is used.  -c specifies the working
             directory in which the new window is created.

             When the shell command completes, the window closes.  See the
             remain-on-exit option to change this behaviour.

             The TERM environment variable must be set to ‘screen’ or ‘tmux’ for
             all programs running inside tmux.  New windows will automatically
             have ‘TERM=screen’ added to their environment, but care must be
             taken not to reset this in shell start-up files.

             The -P option prints information about the new window after it has
             been created.  By default, it uses the format
             ‘#{session_name}:#{window_index}’ but a different format may be
             specified with -F.

     next-layout [-t target-window]
                   (alias: nextl)
             Move a window to the next layout and rearrange the panes to fit.

     next-window [-a] [-t target-session]
                   (alias: next)
             Move to the next window in the session.  If -a is used, move to the
             next window with an alert.

     pipe-pane [-IOo] [-t target-pane] [shell-command]
                   (alias: pipep)
             Pipe output sent by the program in target-pane to a shell command
             or vice versa.  A pane may only be connected to one command at a
             time, any existing pipe is closed before shell-command is executed.
             The shell-command string may contain the special character
             sequences supported by the status-left option.  If no shell-command
             is given, the current pipe (if any) is closed.

             -I and -O specify which of the shell-command output streams are
             connected to the pane: with -I stdout is connected (so anything
             shell-command prints is written to the pane as if it were typed);
             with -O stdin is connected (so any output in the pane is piped to
             shell-command).  Both may be used together and if neither are
             specified, -O is used.

             The -o option only opens a new pipe if no previous pipe exists,
             allowing a pipe to be toggled with a single key, for example:

                   bind-key C-p pipe-pane -o 'cat >>~/output.#I-#P'

     previous-layout [-t target-window]
                   (alias: prevl)
             Move to the previous layout in the session.

     previous-window [-a] [-t target-session]
                   (alias: prev)
             Move to the previous window in the session.  With -a, move to the
             previous window with an alert.

     rename-window [-t target-window] new-name
                   (alias: renamew)
             Rename the current window, or the window at target-window if
             specified, to new-name.

     resize-pane [-DLMRUZ] [-t target-pane] [-x width] [-y height] [adjustment]
                   (alias: resizep)
             Resize a pane, up, down, left or right by adjustment with -U, -D,
             -L or -R, or to an absolute size with -x or -y.  The adjustment is
             given in lines or cells (the default is 1).

             With -Z, the active pane is toggled between zoomed (occupying the
             whole of the window) and unzoomed (its normal position in the

             -M begins mouse resizing (only valid if bound to a mouse key
             binding, see MOUSE SUPPORT).

     resize-window [-aADLRU] [-t target-window] [-x width] [-y height]
                   (alias: resizew)
             Resize a window, up, down, left or right by adjustment with -U, -D,
             -L or -R, or to an absolute size with -x or -y.  The adjustment is
             given in lines or cells (the default is 1).  -A sets the size of
             the largest session containing the window; -a the size of the
             smallest.  This command will automatically set window-size to
             manual in the window options.

     respawn-pane [-c start-directory] [-k] [-t target-pane] [shell-command]
                   (alias: respawnp)
             Reactivate a pane in which the command has exited (see the
             remain-on-exit window option).  If shell-command is not given, the
             command used when the pane was created is executed.  The pane must
             be already inactive, unless -k is given, in which case any existing
             command is killed.  -c specifies a new working directory for the

     respawn-window [-c start-directory] [-k] [-t target-window] [shell-command]
                   (alias: respawnw)
             Reactivate a window in which the command has exited (see the
             remain-on-exit window option).  If shell-command is not given, the
             command used when the window was created is executed.  The window
             must be already inactive, unless -k is given, in which case any
             existing command is killed.  -c specifies a new working directory
             for the window.

     rotate-window [-DU] [-t target-window]
                   (alias: rotatew)
             Rotate the positions of the panes within a window, either upward
             (numerically lower) with -U or downward (numerically higher).

     select-layout [-Enop] [-t target-pane] [layout-name]
                   (alias: selectl)
             Choose a specific layout for a window.  If layout-name is not
             given, the last preset layout used (if any) is reapplied.  -n and
             -p are equivalent to the next-layout and previous-layout commands.
             -o applies the last set layout if possible (undoes the most recent
             layout change).  -E spreads the current pane and any panes next to
             it out evenly.

     select-pane [-DdegLlMmRU] [-P style] [-T title] [-t target-pane]
                   (alias: selectp)
             Make pane target-pane the active pane in window target-window, or
             set its style (with -P).  If one of -D, -L, -R, or -U is used,
             respectively the pane below, to the left, to the right, or above
             the target pane is used.  -l is the same as using the last-pane
             command.  -e enables or -d disables input to the pane.

             -m and -M are used to set and clear the marked pane.  There is one
             marked pane at a time, setting a new marked pane clears the last.
             The marked pane is the default target for -s to join-pane,
             swap-pane and swap-window.

             Each pane has a style: by default the window-style and
             window-active-style options are used, select-pane -P sets the style
             for a single pane.  For example, to set the pane 1 background to

                   select-pane -t:.1 -P 'bg=red'

             -g shows the current pane style.

             -T sets the pane title.

     select-window [-lnpT] [-t target-window]
                   (alias: selectw)
             Select the window at target-window.  -l, -n and -p are equivalent
             to the last-window, next-window and previous-window commands.  If
             -T is given and the selected window is already the current window,
             the command behaves like last-window.

     split-window [-bdfhvP] [-c start-directory] [-l size | -p percentage] [-t
             target-pane] [shell-command] [-F format]
                   (alias: splitw)
             Create a new pane by splitting target-pane: -h does a horizontal
             split and -v a vertical split; if neither is specified, -v is
             assumed.  The -l and -p options specify the size of the new pane in
             lines (for vertical split) or in cells (for horizontal split), or
             as a percentage, respectively.  The -b option causes the new pane
             to be created to the left of or above target-pane.  The -f option
             creates a new pane spanning the full window height (with -h) or
             full window width (with -v), instead of splitting the active pane.
             All other options have the same meaning as for the new-window

     swap-pane [-dDU] [-s src-pane] [-t dst-pane]
                   (alias: swapp)
             Swap two panes.  If -U is used and no source pane is specified with
             -s, dst-pane is swapped with the previous pane (before it
             numerically); -D swaps with the next pane (after it numerically).
             -d instructs tmux not to change the active pane.

             If -s is omitted and a marked pane is present (see select-pane -m),
             the marked pane is used rather than the current pane.

     swap-window [-d] [-s src-window] [-t dst-window]
                   (alias: swapw)
             This is similar to link-window, except the source and destination
             windows are swapped.  It is an error if no window exists at

             Like swap-pane, if -s is omitted and a marked pane is present (see
             select-pane -m), the window containing the marked pane is used
             rather than the current window.

     unlink-window [-k] [-t target-window]
                   (alias: unlinkw)
             Unlink target-window.  Unless -k is given, a window may be unlinked
             only if it is linked to multiple sessions - windows may not be
             linked to no sessions; if -k is specified and the window is linked
             to only one session, it is unlinked and destroyed.

     tmux allows a command to be bound to most keys, with or without a prefix
     key.  When specifying keys, most represent themselves (for example ‘A’ to
     ‘Z’).  Ctrl keys may be prefixed with ‘C-’ or ‘^’, and Alt (meta) with
     ‘M-’.  In addition, the following special key names are accepted: Up, Down,
     Left, Right, BSpace, BTab, DC (Delete), End, Enter, Escape, F1 to F12,
     Home, IC (Insert), NPage/PageDown/PgDn, PPage/PageUp/PgUp, Space, and Tab.
     Note that to bind the ‘"’ or ‘'’ keys, quotation marks are necessary, for

           bind-key '"' split-window
           bind-key "'" new-window

     Commands related to key bindings are as follows:

     bind-key [-nr] [-T key-table] key command [arguments]
                   (alias: bind)
             Bind key key to command.  Keys are bound in a key table.  By
             default (without -T), the key is bound in the prefix key table.
             This table is used for keys pressed after the prefix key (for
             example, by default ‘c’ is bound to new-window in the prefix table,
             so ‘C-b c’ creates a new window).  The root table is used for keys
             pressed without the prefix key: binding ‘c’ to new-window in the
             root table (not recommended) means a plain ‘c’ will create a new
             window.  -n is an alias for -T root.  Keys may also be bound in
             custom key tables and the switch-client -T command used to switch
             to them from a key binding.  The -r flag indicates this key may
             repeat, see the repeat-time option.

             To view the default bindings and possible commands, see the
             list-keys command.

     list-keys [-T key-table]
                   (alias: lsk)
             List all key bindings.  Without -T all key tables are printed.
             With -T only key-table.

     send-keys [-lMRX] [-N repeat-count] [-t target-pane] key ...
                   (alias: send)
             Send a key or keys to a window.  Each argument key is the name of
             the key (such as ‘C-a’ or ‘NPage’) to send; if the string is not
             recognised as a key, it is sent as a series of characters.  The -l
             flag disables key name lookup and sends the keys literally.  All
             arguments are sent sequentially from first to last.  The -R flag
             causes the terminal state to be reset.

             -M passes through a mouse event (only valid if bound to a mouse key
             binding, see MOUSE SUPPORT).

             -X is used to send a command into copy mode - see the WINDOWS AND
             PANES section.  -N specifies a repeat count.

     send-prefix [-2] [-t target-pane]
             Send the prefix key, or with -2 the secondary prefix key, to a
             window as if it was pressed.

     unbind-key [-an] [-T key-table] key
                   (alias: unbind)
             Unbind the command bound to key.  -n and -T are the same as for
             bind-key.  If -a is present, all key bindings are removed.

     The appearance and behaviour of tmux may be modified by changing the value
     of various options.  There are three types of option: server options,
     session options and window options.

     The tmux server has a set of global options which do not apply to any
     particular window or session.  These are altered with the set-option -s
     command, or displayed with the show-options -s command.

     In addition, each individual session may have a set of session options, and
     there is a separate set of global session options.  Sessions which do not
     have a particular option configured inherit the value from the global
     session options.  Session options are set or unset with the set-option
     command and may be listed with the show-options command.  The available
     server and session options are listed under the set-option command.

     Similarly, a set of window options is attached to each window, and there is
     a set of global window options from which any unset options are inherited.
     Window options are altered with the set-window-option command and can be
     listed with the show-window-options command.  All window options are
     documented with the set-window-option command.

     tmux also supports user options which are prefixed with a ‘@’.  User
     options may have any name, so long as they are prefixed with ‘@’, and be
     set to any string.  For example:

           $ tmux setw -q @foo "abc123"
           $ tmux showw -v @foo

     Commands which set options are as follows:

     set-option [-aFgoqsuw] [-t target-session | target-window] option value
                   (alias: set)
             Set a window option with -w (equivalent to the set-window-option
             command), a server option with -s, otherwise a session option.  If
             -g is given, the global session or window option is set.  -F
             expands formats in the option value.  The -u flag unsets an option,
             so a session inherits the option from the global options (or with
             -g, restores a global option to the default).

             The -o flag prevents setting an option that is already set and the
             -q flag suppresses errors about unknown or ambiguous options.

             With -a, and if the option expects a string or a style, value is
             appended to the existing setting.  For example:

                   set -g status-left "foo"
                   set -ag status-left "bar"

             Will result in ‘foobar’.  And:

                   set -g status-style "bg=red"
                   set -ag status-style "fg=blue"

             Will result in a red background and blue foreground.  Without -a,
             the result would be the default background and a blue foreground.

             Available window options are listed under set-window-option.

             value depends on the option and may be a number, a string, or a
             flag (on, off, or omitted to toggle).

             Available server options are:

             buffer-limit number
                     Set the number of buffers; as new buffers are added to the
                     top of the stack, old ones are removed from the bottom if
                     necessary to maintain this maximum length.

             command-alias[] name=value
                     This is an array of custom aliases for commands.  If an
                     unknown command matches name, it is replaced with value.
                     For example, after:

                           set -s command-alias[100] zoom='resize-pane -Z'


                           zoom -t:.1

                     Is equivalent to:

                           resize-pane -Z -t:.1

                     Note that aliases are expanded when a command is parsed
                     rather than when it is executed, so binding an alias with
                     bind-key will bind the expanded form.

             default-terminal terminal
                     Set the default terminal for new windows created in this
                     session - the default value of the TERM environment
                     variable.  For tmux to work correctly, this must be set to
                     ‘screen’, ‘tmux’ or a derivative of them.

             escape-time time
                     Set the time in milliseconds for which tmux waits after an
                     escape is input to determine if it is part of a function or
                     meta key sequences.  The default is 500 milliseconds.

             exit-empty [on | off]
                     If enabled (the default), the server will exit when there
                     are no active sessions.

             exit-unattached [on | off]
                     If enabled, the server will exit when there are no attached

             focus-events [on | off]
                     When enabled, focus events are requested from the terminal
                     if supported and passed through to applications running in
                     tmux.  Attached clients should be detached and attached
                     again after changing this option.

             history-file path
                     If not empty, a file to which tmux will write command
                     prompt history on exit and load it from on start.

             message-limit number
                     Set the number of error or information messages to save in
                     the message log for each client.  The default is 100.

             set-clipboard [on | external | off]
                     Attempt to set the terminal clipboard content using the
                     xterm(1) escape sequence, if there is an Ms entry in the
                     terminfo(5) description (see the TERMINFO EXTENSIONS

                     If set to on, tmux will both accept the escape sequence to
                     create a buffer and attempt to set the terminal clipboard.
                     If set to external, tmux will attempt to set the terminal
                     clipboard but ignore attempts by applications to set tmux
                     buffers.  If off, tmux will neither accept the clipboard
                     escape sequence nor attempt to set the clipboard.

                     Note that this feature needs to be enabled in xterm(1) by
                     setting the resource:

                           disallowedWindowOps: 20,21,SetXprop

                     Or changing this property from the xterm(1) interactive
                     menu when required.

             terminal-overrides[] string
                     Allow terminal descriptions read using terminfo(5) to be
                     overridden.  Each entry is a colon-separated string made up
                     of a terminal type pattern (matched using fnmatch(3)) and a
                     set of name=value entries.

                     For example, to set the ‘clear’ terminfo(5) entry to
                     ‘\e[H\e[2J’ for all terminal types matching ‘rxvt*’:


                     The terminal entry value is passed through strunvis(3)
                     before interpretation.

             Available session options are:

             activity-action [any | none | current | other]
                     Set action on window activity when monitor-activity is on.
                     any means activity in any window linked to a session causes
                     a bell or message (depending on visual-activity) in the
                     current window of that session, none means all activity is
                     ignored (equivalent to monitor-activity being off), current
                     means only activity in windows other than the current
                     window are ignored and other means activity in the current
                     window is ignored but not those in other windows.

             assume-paste-time milliseconds
                     If keys are entered faster than one in milliseconds, they
                     are assumed to have been pasted rather than typed and tmux
                     key bindings are not processed.  The default is one
                     millisecond and zero disables.

             base-index index
                     Set the base index from which an unused index should be
                     searched when a new window is created.  The default is

             bell-action [any | none | current | other]
                     Set action on a bell in a window when monitor-bell is on.
                     The values are the same as those for activity-action.

             default-command shell-command
                     Set the command used for new windows (if not specified when
                     the window is created) to shell-command, which may be any
                     sh(1) command.  The default is an empty string, which
                     instructs tmux to create a login shell using the value of
                     the default-shell option.

             default-size XxY
                     Set the default size of new windows when the window-size
                     option is set to manual or when a session is created with
                     new-session -d.  The value is the width and height
                     separated by an ‘x’ character.  The default is 80x24.

             default-shell path
                     Specify the default shell.  This is used as the login shell
                     for new windows when the default-command option is set to
                     empty, and must be the full path of the executable.  When
                     started tmux tries to set a default value from the first
                     suitable of the SHELL environment variable, the shell
                     returned by getpwuid(3), or /bin/sh.  This option should be
                     configured when tmux is used as a login shell.

             default-size XxY
                     Set the default size of windows when the size is not set or
                     the window-size option is manual.

             destroy-unattached [on | off]
                     If enabled and the session is no longer attached to any
                     clients, it is destroyed.

             detach-on-destroy [on | off]
                     If on (the default), the client is detached when the
                     session it is attached to is destroyed.  If off, the client
                     is switched to the most recently active of the remaining

             display-panes-active-colour colour
                     Set the colour used by the display-panes command to show
                     the indicator for the active pane.

             display-panes-colour colour
                     Set the colour used by the display-panes command to show
                     the indicators for inactive panes.

             display-panes-time time
                     Set the time in milliseconds for which the indicators shown
                     by the display-panes command appear.

             display-time time
                     Set the amount of time for which status line messages and
                     other on-screen indicators are displayed.  If set to 0,
                     messages and indicators are displayed until a key is
                     pressed.  time is in milliseconds.

             history-limit lines
                     Set the maximum number of lines held in window history.
                     This setting applies only to new windows - existing window
                     histories are not resized and retain the limit at the point
                     they were created.

             key-table key-table
                     Set the default key table to key-table instead of root.

             lock-after-time number
                     Lock the session (like the lock-session command) after
                     number seconds of inactivity.  The default is not to lock
                     (set to 0).

             lock-command shell-command
                     Command to run when locking each client.  The default is to
                     run lock(1) with -np.

             message-command-style style
                     Set status line message command style.  For how to specify
                     style, see the STYLES section.

             message-style style
                     Set status line message style.  For how to specify style,
                     see the STYLES section.

             mouse [on | off]
                     If on, tmux captures the mouse and allows mouse events to
                     be bound as key bindings.  See the MOUSE SUPPORT section
                     for details.

             prefix key
                     Set the key accepted as a prefix key.  In addition to the
                     standard keys described under KEY BINDINGS, prefix can be
                     set to the special key ‘None’ to set no prefix.

             prefix2 key
                     Set a secondary key accepted as a prefix key.  Like prefix,
                     prefix2 can be set to ‘None’.

             renumber-windows [on | off]
                     If on, when a window is closed in a session, automatically
                     renumber the other windows in numerical order.  This
                     respects the base-index option if it has been set.  If off,
                     do not renumber the windows.

             repeat-time time
                     Allow multiple commands to be entered without pressing the
                     prefix-key again in the specified time milliseconds (the
                     default is 500).  Whether a key repeats may be set when it
                     is bound using the -r flag to bind-key.  Repeat is enabled
                     for the default keys bound to the resize-pane command.

             set-titles [on | off]
                     Attempt to set the client terminal title using the tsl and
                     fsl terminfo(5) entries if they exist.  tmux automatically
                     sets these to the \e]0;...\007 sequence if the terminal
                     appears to be xterm(1).  This option is off by default.

             set-titles-string string
                     String used to set the window title if set-titles is on.
                     Formats are expanded, see the FORMATS section.

             silence-action [any | none | current | other]
                     Set action on window silence when monitor-silence is on.
                     The values are the same as those for activity-action.

             status [off | on | 2 | 3 | 4 | 5]
                     Show or hide the status line or specify its size.  Using on
                     gives a status line one row in height; 2, 3, 4 or 5 more

             status-format[] format
                     Specify the format to be used for each line of the status
                     line.  The default builds the top status line from the
                     various individual status options below.

             status-interval interval
                     Update the status line every interval seconds.  By default,
                     updates will occur every 15 seconds.  A setting of zero
                     disables redrawing at interval.

             status-justify [left | centre | right]
                     Set the position of the window list component of the status
                     line: left, centre or right justified.

             status-keys [vi | emacs]
                     Use vi or emacs-style key bindings in the status line, for
                     example at the command prompt.  The default is emacs,
                     unless the VISUAL or EDITOR environment variables are set
                     and contain the string ‘vi’.

             status-left string
                     Display string (by default the session name) to the left of
                     the status line.  string will be passed through
                     strftime(3).  Also see the FORMATS and STYLES sections.

                     For details on how the names and titles can be set see the
                     NAMES AND TITLES section.

                     Examples are:

                           #(sysctl vm.loadavg)
                           #[fg=yellow,bold]#(apm -l)%%#[default] [#S]

                     The default is ‘[#S] ’.

             status-left-length length
                     Set the maximum length of the left component of the status
                     line.  The default is 10.

             status-left-style style
                     Set the style of the left part of the status line.  For how
                     to specify style, see the STYLES section.

             status-position [top | bottom]
                     Set the position of the status line.

             status-right string
                     Display string to the right of the status line.  By
                     default, the current pane title in double quotes, the date
                     and the time are shown.  As with status-left, string will
                     be passed to strftime(3) and character pairs are replaced.

             status-right-length length
                     Set the maximum length of the right component of the status
                     line.  The default is 40.

             status-right-style style
                     Set the style of the right part of the status line.  For
                     how to specify style, see the STYLES section.

             status-style style
                     Set status line style.  For how to specify style, see the
                     STYLES section.

             update-environment[] variable
                     Set list of environment variables to be copied into the
                     session environment when a new session is created or an
                     existing session is attached.  Any variables that do not
                     exist in the source environment are set to be removed from
                     the session environment (as if -r was given to the
                     set-environment command).

             user-keys[] key
                     Set list of user-defined key escape sequences.  Each item
                     is associated with a key named ‘User0’, ‘User1’, and so on.

                     For example:

                           set -s user-keys[0] "\e[5;30012~"
                           bind User0 resize-pane -L 3

             visual-activity [on | off | both]
                     If on, display a message instead of sending a bell when
                     activity occurs in a window for which the monitor-activity
                     window option is enabled.  If set to both, a bell and a
                     message are produced.

             visual-bell [on | off | both]
                     If on, a message is shown on a bell in a window for which
                     the monitor-bell window option is enabled instead of it
                     being passed through to the terminal (which normally makes
                     a sound).  If set to both, a bell and a message are
                     produced.  Also see the bell-action option.

             visual-silence [on | off | both]
                     If monitor-silence is enabled, prints a message after the
                     interval has expired on a given window instead of sending a
                     bell.  If set to both, a bell and a message are produced.

             word-separators string
                     Sets the session's conception of what characters are
                     considered word separators, for the purposes of the next
                     and previous word commands in copy mode.  The default is
                     ‘ -_@’.

     set-window-option [-aFgoqu] [-t target-window] option value
                   (alias: setw)
             Set a window option.  The -a, -F, -g, -o, -q and -u flags work
             similarly to the set-option command.

             Supported window options are:

             aggressive-resize [on | off]
                     Aggressively resize the chosen window.  This means that
                     tmux will resize the window to the size of the smallest or
                     largest session (see the window-size option) for which it
                     is the current window, rather than the session to which it
                     is attached.  The window may resize when the current window
                     is changed on another session; this option is good for
                     full-screen programs which support SIGWINCH and poor for
                     interactive programs such as shells.

             allow-rename [on | off]
                     Allow programs to change the window name using a terminal
                     escape sequence (\ek...\e\\).  The default is off.

             alternate-screen [on | off]
                     This option configures whether programs running inside tmux
                     may use the terminal alternate screen feature, which allows
                     the smcup and rmcup terminfo(5) capabilities.  The
                     alternate screen feature preserves the contents of the
                     window when an interactive application starts and restores
                     it on exit, so that any output visible before the
                     application starts reappears unchanged after it exits.  The
                     default is on.

             automatic-rename [on | off]
                     Control automatic window renaming.  When this setting is
                     enabled, tmux will rename the window automatically using
                     the format specified by automatic-rename-format.  This flag
                     is automatically disabled for an individual window when a
                     name is specified at creation with new-window or
                     new-session, or later with rename-window, or with a
                     terminal escape sequence.  It may be switched off globally

                           set-window-option -g automatic-rename off

             automatic-rename-format format
                     The format (see FORMATS) used when the automatic-rename
                     option is enabled.

             clock-mode-colour colour
                     Set clock colour.

             clock-mode-style [12 | 24]
                     Set clock hour format.

             main-pane-height height
             main-pane-width width
                     Set the width or height of the main (left or top) pane in
                     the main-horizontal or main-vertical layouts.

             mode-keys [vi | emacs]
                     Use vi or emacs-style key bindings in copy mode.  The
                     default is emacs, unless VISUAL or EDITOR contains ‘vi’.

             mode-style style
                     Set window modes style.  For how to specify style, see the
                     STYLES section.

             monitor-activity [on | off]
                     Monitor for activity in the window.  Windows with activity
                     are highlighted in the status line.

             monitor-bell [on | off]
                     Monitor for a bell in the window.  Windows with a bell are
                     highlighted in the status line.

             monitor-silence [interval]
                     Monitor for silence (no activity) in the window within
                     interval seconds.  Windows that have been silent for the
                     interval are highlighted in the status line.  An interval
                     of zero disables the monitoring.

             other-pane-height height
                     Set the height of the other panes (not the main pane) in
                     the main-horizontal layout.  If this option is set to 0
                     (the default), it will have no effect.  If both the
                     main-pane-height and other-pane-height options are set, the
                     main pane will grow taller to make the other panes the
                     specified height, but will never shrink to do so.

             other-pane-width width
                     Like other-pane-height, but set the width of other panes in
                     the main-vertical layout.

             pane-active-border-style style
                     Set the pane border style for the currently active pane.
                     For how to specify style, see the STYLES section.
                     Attributes are ignored.

             pane-base-index index
                     Like base-index, but set the starting index for pane

             pane-border-format format
                     Set the text shown in pane border status lines.

             pane-border-status [off | top | bottom]
                     Turn pane border status lines off or set their position.

             pane-border-style style
                     Set the pane border style for panes aside from the active
                     pane.  For how to specify style, see the STYLES section.
                     Attributes are ignored.

             remain-on-exit [on | off]
                     A window with this flag set is not destroyed when the
                     program running in it exits.  The window may be reactivated
                     with the respawn-window command.

             synchronize-panes [on | off]
                     Duplicate input to any pane to all other panes in the same
                     window (only for panes that are not in any special mode).

             window-active-style style
                     Set the style for the window's active pane.  For how to
                     specify style, see the STYLES section.

             window-status-activity-style style
                     Set status line style for windows with an activity alert.
                     For how to specify style, see the STYLES section.

             window-status-bell-style style
                     Set status line style for windows with a bell alert.  For
                     how to specify style, see the STYLES section.

             window-status-current-format string
                     Like window-status-format, but is the format used when the
                     window is the current window.

             window-status-current-style style
                     Set status line style for the currently active window.  For
                     how to specify style, see the STYLES section.

             window-status-format string
                     Set the format in which the window is displayed in the
                     status line window list.  See the FORMATS and STYLES

             window-status-last-style style
                     Set status line style for the last active window.  For how
                     to specify style, see the STYLES section.

             window-status-separator string
                     Sets the separator drawn between windows in the status
                     line.  The default is a single space character.

             window-status-style style
                     Set status line style for a single window.  For how to
                     specify style, see the STYLES section.

             window-size largest | smallest | manual
                     Configure how tmux determines the window size.  If set to
                     largest, the size of the largest attached session is used;
                     if smallest, the size of the smallest.  If manual, the size
                     of a new window is set from the default-size option and
                     windows are resized automatically.  See also the
                     resize-window command and the aggressive-resize option.

             window-style style
                     Set the default window style.  For how to specify style,
                     see the STYLES section.

             window-size [smallest | largest | manual]
                     Tell tmux how to automatically size windows either the size
                     of the smallest session containing the window, the size of
                     the largest, or manual size.  See also the resize-window
                     command and the default-size and aggressive-resize options.

             wrap-search [on | off]
                     If this option is set, searches will wrap around the end of
                     the pane contents.  The default is on.

             xterm-keys [on | off]
                     If this option is set, tmux will generate xterm(1) -style
                     function key sequences; these have a number included to
                     indicate modifiers such as Shift, Alt or Ctrl.

     show-options [-gqsvw] [-t target-session | target-window] [option]
                   (alias: show)
             Show the window options (or a single window option if given) with
             -w (equivalent to show-window-options), the server options with -s,
             otherwise the session options for target session.  Global session
             or window options are listed if -g is used.  -v shows only the
             option value, not the name.  If -q is set, no error will be
             returned if option is unset.

     show-window-options [-gv] [-t target-window] [option]
                   (alias: showw)
             List the window options or a single option for target-window, or
             the global window options if -g is used.  -v shows only the option
             value, not the name.

     tmux allows commands to run on various triggers, called hooks.  Most tmux
     commands have an after hook and there are a number of hooks not associated
     with commands.

     A command's after hook is run after it completes, except when the command
     is run as part of a hook itself.  They are named with an ‘after-’ prefix.
     For example, the following command adds a hook to select the even-vertical
     layout after every split-window:

           set-hook after-split-window "selectl even-vertical"

     All the notifications listed in the CONTROL MODE section are hooks (without
     any arguments), except %exit.  The following additional hooks are

     alert-activity          Run when a window has activity.  See

     alert-bell              Run when a window has received a bell.  See

     alert-silence           Run when a window has been silent.  See

     client-attached         Run when a client is attached.

     client-detached         Run when a client is detached

     client-resized          Run when a client is resized.

     client-session-changed  Run when a client's attached session is changed.

     pane-died               Run when the program running in a pane exits, but
                             remain-on-exit is on so the pane has not closed.

     pane-exited             Run when the program running in a pane exits.

     pane-focus-in           Run when the focus enters a pane, if the
                             focus-events option is on.

     pane-focus-out          Run when the focus exits a pane, if the
                             focus-events option is on.

     pane-set-clipboard      Run when the terminal clipboard is set using the
                             xterm(1) escape sequence.

     session-created         Run when a new session created.

     session-closed          Run when a session closed.

     session-renamed         Run when a session is renamed.

     window-linked           Run when a window is linked into a session.

     window-renamed          Run when a window is renamed.

     window-unlinked         Run when a window is unlinked from a session.

     Hooks are managed with these commands:

     set-hook [-gRu] [-t target-session] hook-name command
             Without -R, sets (or with -u unsets) hook hook-name to command.  If
             -g is given, hook-name is added to the global list of hooks,
             otherwise it is added to the session hooks (for target-session with
             -t).  Like options, session hooks inherit from the global ones.

             With -R, run hook-name immediately.

     show-hooks [-g] [-t target-session]
             Shows the global list of hooks with -g, otherwise the session

     If the mouse option is on (the default is off), tmux allows mouse events to
     be bound as keys.  The name of each key is made up of a mouse event (such
     as ‘MouseUp1’) and a location suffix, one of the following:

           Pane             the contents of a pane
           Border           a pane border
           Status           the status line window list
           StatusLeft       the left part of the status line
           StatusRight      the right part of the status line
           StatusDefault    any other part of the status line

     The following mouse events are available:

           WheelUp       WheelDown
           MouseDown1    MouseUp1      MouseDrag1   MouseDragEnd1
           MouseDown2    MouseUp2      MouseDrag2   MouseDragEnd2
           MouseDown3    MouseUp3      MouseDrag3   MouseDragEnd3
           DoubleClick1  DoubleClick2  DoubleClick3
           TripleClick1  TripleClick2  TripleClick3

     Each should be suffixed with a location, for example ‘MouseDown1Status’.

     The special token ‘{mouse}’ or ‘=’ may be used as target-window or
     target-pane in commands bound to mouse key bindings.  It resolves to the
     window or pane over which the mouse event took place (for example, the
     window in the status line over which button 1 was released for a
     ‘MouseUp1Status’ binding, or the pane over which the wheel was scrolled for
     a ‘WheelDownPane’ binding).

     The send-keys -M flag may be used to forward a mouse event to a pane.

     The default key bindings allow the mouse to be used to select and resize
     panes, to copy text and to change window using the status line.  These take
     effect if the mouse option is turned on.

     Certain commands accept the -F flag with a format argument.  This is a
     string which controls the output format of the command.  Replacement
     variables are enclosed in ‘#{’ and ‘}’, for example ‘#{session_name}’.  The
     possible variables are listed in the table below, or the name of a tmux
     option may be used for an option's value.  Some variables have a shorter
     alias such as ‘#S’; ‘##’ is replaced by a single ‘#’, ‘#,’ by a ‘,’ and
     ‘#}’ by a ‘}’.

     Conditionals are available by prefixing with ‘?’ and separating two
     alternatives with a comma; if the specified variable exists and is not
     zero, the first alternative is chosen, otherwise the second is used.  For
     example ‘#{?session_attached,attached,not attached}’ will include the
     string ‘attached’ if the session is attached and the string ‘not attached’
     if it is unattached, or ‘#{?automatic-rename,yes,no}’ will include ‘yes’ if
     automatic-rename is enabled, or ‘no’ if not.  Conditionals can be nested
     arbitrarily.  Inside a conditional, ‘,’ and ‘}’ must be escaped as ‘#,’ and
     ‘#}’, unless they are part of a ‘#{...}’ replacement.  For example:

           #{?pane_in_mode,#[fg=white#,bg=red],#[fg=red#,bg=white]}#W .

     Comparisons may be expressed by prefixing two comma-separated alternatives
     by ‘==’ or ‘!=’ and a colon.  For example ‘#{==:#{host},myhost}’ will be
     replaced by ‘1’ if running on ‘myhost’, otherwise by ‘0’.  An ‘m’ specifies
     an fnmatch(3) comparison where the first argument is the pattern and the
     second the string to compare, for example ‘#{m:*foo*,#{host}}’.  ‘||’ and
     ‘&&’ evaluate to true if either or both of two comma-separated alternatives
     are true, for example ‘#{||:#{pane_in_mode},#{alternate_on}}’.  A ‘C’
     performs a search for an fnmatch(3) pattern in the pane content and
     evaluates to zero if not found, or a line number if found.

     A limit may be placed on the length of the resultant string by prefixing it
     by an ‘=’, a number and a colon.  Positive numbers count from the start of
     the string and negative from the end, so ‘#{=5:pane_title}’ will include at
     most the first 5 characters of the pane title, or ‘#{=-5:pane_title}’ the
     last 5 characters.  Prefixing a time variable with ‘t:’ will convert it to
     a string, so if ‘#{window_activity}’ gives ‘1445765102’,
     ‘#{t:window_activity}’ gives ‘Sun Oct 25 09:25:02 2015’.  The ‘b:’ and ‘d:’
     prefixes are basename(3) and dirname(3) of the variable respectively.  ‘q:’
     will escape sh(1) special characters.  ‘E:’ will expand the format twice,
     for example ‘#{E:status-left}’ is the result of expanding the content of
     the status-left option rather than the content itself.  ‘T:’ is like ‘E:’
     but also expands strftime(3) specifiers.  ‘S:’, ‘W:’ or ‘P:’ will loop over
     each session, window or pane and insert the format once for each.  For
     windows and panes, two comma-separated formats may be given: the second is
     used for the current window or active pane.  For example, to get a list of
     windows formatted like the status line:

           #{W:#{E:window-status-format} ,#{E:window-status-current-format} }

     A prefix of the form ‘s/foo/bar/:’ will substitute ‘foo’ with ‘bar’

     In addition, the first line of a shell command's output may be inserted
     using ‘#()’.  For example, ‘#(uptime)’ will insert the system's uptime.
     When constructing formats, tmux does not wait for ‘#()’ commands to finish;
     instead, the previous result from running the same command is used, or a
     placeholder if the command has not been run before.  If the command hasn't
     exited, the most recent line of output will be used, but the status line
     will not be updated more than once a second.  Commands are executed with
     the tmux global environment set (see the ENVIRONMENT section).

     The following variables are available, where appropriate:

     Variable name          Alias    Replaced with
     alternate_on                    If pane is in alternate screen
     alternate_saved_x               Saved cursor X in alternate screen
     alternate_saved_y               Saved cursor Y in alternate screen
     buffer_created                  Time buffer created
     buffer_name                     Name of buffer
     buffer_sample                   Sample of start of buffer
     buffer_size                     Size of the specified buffer in bytes
     client_activity                 Time client last had activity
     client_created                  Time client created
     client_control_mode             1 if client is in control mode
     client_discarded                Bytes discarded when client behind
     client_height                   Height of client
     client_key_table                Current key table
     client_last_session             Name of the client's last session
     client_name                     Name of client
     client_pid                      PID of client process
     client_prefix                   1 if prefix key has been pressed
     client_readonly                 1 if client is readonly
     client_session                  Name of the client's session
     client_termname                 Terminal name of client
     client_termtype                 Terminal type of client
     client_tty                      Pseudo terminal of client
     client_utf8                     1 if client supports utf8
     client_width                    Width of client
     client_written                  Bytes written to client
     command                         Name of command in use, if any
     command_list_name               Command name if listing commands
     command_list_alias              Command alias if listing commands
     command_list_usage              Command usage if listing commands
     cursor_flag                     Pane cursor flag
     cursor_character                Character at cursor in pane
     cursor_x                        Cursor X position in pane
     cursor_y                        Cursor Y position in pane
     history_bytes                   Number of bytes in window history
     history_limit                   Maximum window history lines
     history_size                    Size of history in lines
     hook                            Name of running hook, if any
     hook_pane                       ID of pane where hook was run, if any
     hook_session                    ID of session where hook was run, if any
     hook_session_name               Name of session where hook was run, if any
     hook_window                     ID of window where hook was run, if any
     hook_window_name                Name of window where hook was run, if any
     host                   #H       Hostname of local host
     host_short             #h       Hostname of local host (no domain name)
     insert_flag                     Pane insert flag
     keypad_cursor_flag              Pane keypad cursor flag
     keypad_flag                     Pane keypad flag
     line                            Line number in the list
     mouse_any_flag                  Pane mouse any flag
     mouse_button_flag               Pane mouse button flag
     mouse_standard_flag             Pane mouse standard flag
     mouse_all_flag                  Pane mouse all flag
     pane_active                     1 if active pane
     pane_at_bottom                  1 if pane is at the bottom of window
     pane_at_left                    1 if pane is at the left of window
     pane_at_right                   1 if pane is at the right of window
     pane_at_top                     1 if pane is at the top of window
     pane_bottom                     Bottom of pane
     pane_current_command            Current command if available
     pane_current_path               Current path if available
     pane_dead                       1 if pane is dead
     pane_dead_status                Exit status of process in dead pane
     pane_format                     1 if format is for a pane (not assuming the
     pane_height                     Height of pane
     pane_id                #D       Unique pane ID
     pane_in_mode                    If pane is in a mode
     pane_input_off                  If input to pane is disabled
     pane_index             #P       Index of pane
     pane_left                       Left of pane
     pane_mode                       Name of pane mode, if any.
     pane_pid                        PID of first process in pane
     pane_pipe                       1 if pane is being piped
     pane_right                      Right of pane
     pane_search_string              Last search string in copy mode
     pane_start_command              Command pane started with
     pane_synchronized               If pane is synchronized
     pane_tabs                       Pane tab positions
     pane_title             #T       Title of pane
     pane_top                        Top of pane
     pane_tty                        Pseudo terminal of pane
     pane_width                      Width of pane
     pid                             Server PID
     rectangle_toggle                1 if rectangle selection is activated
     scroll_region_lower             Bottom of scroll region in pane
     scroll_region_upper             Top of scroll region in pane
     scroll_position                 Scroll position in copy mode
     selection_present               1 if selection started in copy mode
     session_alerts                  List of window indexes with alerts
     session_attached                Number of clients session is attached to
     session_activity                Time of session last activity
     session_created                 Time session created
     session_format                  1 if format is for a session (not assuming
                                     the current)
     session_last_attached           Time session last attached
     session_group                   Name of session group
     session_group_size              Size of session group
     session_group_list              List of sessions in group
     session_grouped                 1 if session in a group
     session_id                      Unique session ID
     session_many_attached           1 if multiple clients attached
     session_name           #S       Name of session
     session_stack                   Window indexes in most recent order
     session_windows                 Number of windows in session
     socket_path                     Server socket path
     start_time                      Server start time
     version                         Server version
     window_activity                 Time of window last activity
     window_activity_flag            1 if window has activity
     window_active                   1 if window active
     window_bell_flag                1 if window has bell
     window_bigger                   1 if window is larger than client
     window_end_flag                 1 if window has the highest index
     window_flags           #F       Window flags
     window_format                   1 if format is for a window (not assuming
                                     the current)
     window_height                   Height of window
     window_id                       Unique window ID
     window_index           #I       Index of window
     window_last_flag                1 if window is the last used
     window_layout                   Window layout description, ignoring zoomed
                                     window panes
     window_linked                   1 if window is linked across sessions
     window_name            #W       Name of window
     window_offset_x                 X offset into window if larger than client
     window_offset_y                 Y offset into window if larger than client
     window_panes                    Number of panes in window
     window_silence_flag             1 if window has silence alert
     window_stack_index              Index in session most recent stack
     window_start_flag               1 if window has the lowest index
     window_visible_layout           Window layout description, respecting
                                     zoomed window panes
     window_width                    Width of window
     window_zoomed_flag              1 if window is zoomed
     wrap_flag                       Pane wrap flag

     tmux offers various options to specify the colour and attributes of aspects
     of the interface, for example status-style for the status line.  In
     addition, embedded styles may be specified in format options, such as
     status-left-format, by enclosing them in ‘#[’ and ‘’].

     A style may be the single term ‘default’ to specify the default style
     (which may inherit from another option) or a space or comma separated list
     of the following:

             Set the foreground colour.  The colour is one of: black, red,
             green, yellow, blue, magenta, cyan, white; if supported the bright
             variants brightred, brightgreen, brightyellow; colour0 to colour255
             from the 256-colour set; default for the default colour; terminal
             for the terminal default colour; or a hexadecimal RGB string such
             as ‘#ffffff’.

             Set the background colour.

     none    Set no attributes (turn off any active attributes).

     bright (or bold), dim, underscore, blink, reverse, hidden, italics,
             strikethrough, double-underscore, curly-underscore,
             dotted-underscore, dashed-underscore
             Set an attribute.  Any of the attributes may be prefixed with ‘no’
             to unset.

     align=left (or noalign), align=centre, align=right
             Align text to the left, centre or right of the available space if

     list=on, list=focus, list=left-marker, list=right=marker, nolist
             Mark the position of the various window list components in the
             status-format option: list=on marks the start of the list;
             list=focus is the part of the list that should be kept in focus if
             the entire list won't fit in the available space (typically the
             current window); list=left-marker and list=right-marker mark the
             text to be used to mark that text has been trimmed from the left or
             right of the list if there is not enough space.

     range=left, range=right, range=window|X, norange
             Mark a range in the status-format option.  range=left and
             range=right are the text used for the ‘StatusLeft’ and
             ‘StatusRight’ mouse keys.  range=window|X is the range for a window
             passed to the ‘Status’ mouse key, where ‘X’ is a window index.

     Examples are:

           fg=yellow bold underscore blink

     tmux distinguishes between names and titles.  Windows and sessions have
     names, which may be used to specify them in targets and are displayed in
     the status line and various lists: the name is the tmux identifier for a
     window or session.  Only panes have titles.  A pane's title is typically
     set by the program running inside the pane using an escape sequence (like
     it would set the xterm(1) window title in X(7)).  Windows themselves do not
     have titles - a window's title is the title of its active pane.  tmux
     itself may set the title of the terminal in which the client is running,
     see the set-titles option.

     A session's name is set with the new-session and rename-session commands.
     A window's name is set with one of:

     1.      A command argument (such as -n for new-window or new-session).

     2.      An escape sequence (if the allow-rename option is turned on):

                   $ printf '\033kWINDOW_NAME\033\\'

     3.      Automatic renaming, which sets the name to the active command in
             the window's active pane.  See the automatic-rename option.

     When a pane is first created, its title is the hostname.  A pane's title
     can be set via the title setting escape sequence, for example:

           $ printf '\033]2;My Title\033\\'

     It can also be modified with the select-pane -T command.

     When the server is started, tmux copies the environment into the global
     environment; in addition, each session has a session environment.  When a
     window is created, the session and global environments are merged.  If a
     variable exists in both, the value from the session environment is used.
     The result is the initial environment passed to the new process.

     The update-environment session option may be used to update the session
     environment from the client when a new session is created or an old
     reattached.  tmux also initialises the TMUX variable with some internal
     information to allow commands to be executed from inside, and the TERM
     variable with the correct terminal setting of ‘screen’.

     Commands to alter and view the environment are:

     set-environment [-gru] [-t target-session] name [value]
                   (alias: setenv)
             Set or unset an environment variable.  If -g is used, the change is
             made in the global environment; otherwise, it is applied to the
             session environment for target-session.  The -u flag unsets a
             variable.  -r indicates the variable is to be removed from the
             environment before starting a new process.

     show-environment [-gs] [-t target-session] [variable]
                   (alias: showenv)
             Display the environment for target-session or the global
             environment with -g.  If variable is omitted, all variables are
             shown.  Variables removed from the environment are prefixed with
             ‘-’.  If -s is used, the output is formatted as a set of Bourne
             shell commands.

     tmux includes an optional status line which is displayed in the bottom line
     of each terminal.

     By default, the status line is enabled and one line in height (it may be
     disabled or made multiple lines with the status session option) and
     contains, from left-to-right: the name of the current session in square
     brackets; the window list; the title of the active pane in double quotes;
     and the time and date.

     Each line of the status line is configured with the status-format option.
     The default is made of three parts: configurable left and right sections
     (which may contain dynamic content such as the time or output from a shell
     command, see the status-left, status-left-length, status-right, and
     status-right-length options below), and a central window list.  By default,
     the window list shows the index, name and (if any) flag of the windows
     present in the current session in ascending numerical order.  It may be
     customised with the window-status-format and window-status-current-format
     options.  The flag is one of the following symbols appended to the window

           Symbol    Meaning
           *         Denotes the current window.
           -         Marks the last window (previously selected).
           #         Window activity is monitored and activity has been
           !         Window bells are monitored and a bell has occurred in the
           ~         The window has been silent for the monitor-silence
           M         The window contains the marked pane.
           Z         The window's active pane is zoomed.

     The # symbol relates to the monitor-activity window option.  The window
     name is printed in inverted colours if an alert (bell, activity or silence)
     is present.

     The colour and attributes of the status line may be configured, the entire
     status line using the status-style session option and individual windows
     using the window-status-style window option.

     The status line is automatically refreshed at interval if it has changed,
     the interval may be controlled with the status-interval session option.

     Commands related to the status line are as follows:

     command-prompt [-1i] [-I inputs] [-p prompts] [-t target-client] [template]
             Open the command prompt in a client.  This may be used from inside
             tmux to execute commands interactively.

             If template is specified, it is used as the command.  If present,
             -I is a comma-separated list of the initial text for each prompt.
             If -p is given, prompts is a comma-separated list of prompts which
             are displayed in order; otherwise a single prompt is displayed,
             constructed from template if it is present, or ‘:’ if not.

             Before the command is executed, the first occurrence of the string
             ‘%%’ and all occurrences of ‘%1’ are replaced by the response to
             the first prompt, all ‘%2’ are replaced with the response to the
             second prompt, and so on for further prompts.  Up to nine prompt
             responses may be replaced (‘%1’ to ‘%9’).  ‘%%%’ is like ‘%%’ but
             any quotation marks are escaped.

             -1 makes the prompt only accept one key press, in this case the
             resulting input is a single character.  -i executes the command
             every time the prompt input changes instead of when the user exits
             the command prompt.

             The following keys have a special meaning in the command prompt,
             depending on the value of the status-keys option:

                   Function                             vi        emacs
                   Cancel command prompt                Escape    Escape
                   Delete current word                            C-w
                   Delete entire command                d         C-u
                   Delete from cursor to end            D         C-k
                   Execute command                      Enter     Enter
                   Get next command from history                  Down
                   Get previous command from history              Up
                   Insert top paste buffer              p         C-y
                   Look for completions                 Tab       Tab
                   Move cursor left                     h         Left
                   Move cursor right                    l         Right
                   Move cursor to end                   $         C-e
                   Move cursor to next word             w         M-f
                   Move cursor to previous word         b         M-b
                   Move cursor to start                 0         C-a
                   Transpose characters                           C-t

     confirm-before [-p prompt] [-t target-client] command
                   (alias: confirm)
             Ask for confirmation before executing command.  If -p is given,
             prompt is the prompt to display; otherwise a prompt is constructed
             from command.  It may contain the special character sequences
             supported by the status-left option.

             This command works only from inside tmux.

     display-message [-apv] [-c target-client] [-t target-pane] [message]
                   (alias: display)
             Display a message.  If -p is given, the output is printed to
             stdout, otherwise it is displayed in the target-client status line.
             The format of message is described in the FORMATS section;
             information is taken from target-pane if -t is given, otherwise the
             active pane for the session attached to target-client.

             -v prints verbose logging as the format is parsed and -a lists the
             format variables and their values.

     tmux maintains a set of named paste buffers.  Each buffer may be either
     explicitly or automatically named.  Explicitly named buffers are named when
     created with the set-buffer or load-buffer commands, or by renaming an
     automatically named buffer with set-buffer -n.  Automatically named buffers
     are given a name such as ‘buffer0001’, ‘buffer0002’ and so on.  When the
     buffer-limit option is reached, the oldest automatically named buffer is
     deleted.  Explicitly named buffers are not subject to buffer-limit and may
     be deleted with delete-buffer command.

     Buffers may be added using copy-mode or the set-buffer and load-buffer
     commands, and pasted into a window using the paste-buffer command.  If a
     buffer command is used and no buffer is specified, the most recently added
     automatically named buffer is assumed.

     A configurable history buffer is also maintained for each window.  By
     default, up to 2000 lines are kept; this can be altered with the
     history-limit option (see the set-option command above).

     The buffer commands are as follows:

     choose-buffer [-NZ] [-F format] [-f filter] [-O sort-order] [-t
             target-pane] [template]
             Put a pane into buffer mode, where a buffer may be chosen
             interactively from a list.  -Z zooms the pane.  The following keys
             may be used in buffer mode:

                   Key    Function
                   Enter  Paste selected buffer
                   Up     Select previous buffer
                   Down   Select next buffer
                   C-s    Search by name or content
                   n      Repeat last search
                   t      Toggle if buffer is tagged
                   T      Tag no buffers
                   C-t    Tag all buffers
                   p      Paste selected buffer
                   P      Paste tagged buffers
                   d      Delete selected buffer
                   D      Delete tagged buffers
                   f      Enter a format to filter items
                   O      Change sort order
                   v      Toggle preview
                   q      Exit mode

             After a buffer is chosen, ‘%%’ is replaced by the buffer name in
             template and the result executed as a command.  If template is not
             given, "paste-buffer -b '%%'" is used.

             -O specifies the initial sort order: one of ‘time’, ‘name’ or
             ‘size’.  -f specifies an initial filter: the filter is a format -
             if it evaluates to zero, the item in the list is not shown,
             otherwise it is shown.  If a filter would lead to an empty list, it
             is ignored.  -F specifies the format for each item in the list.  -N
             starts without the preview.  This command works only if at least
             one client is attached.

     clear-history [-t target-pane]
                   (alias: clearhist)
             Remove and free the history for the specified pane.

     delete-buffer [-b buffer-name]
                   (alias: deleteb)
             Delete the buffer named buffer-name, or the most recently added
             automatically named buffer if not specified.

     list-buffers [-F format]
                   (alias: lsb)
             List the global buffers.  For the meaning of the -F flag, see the
             FORMATS section.

     load-buffer [-b buffer-name] path
                   (alias: loadb)
             Load the contents of the specified paste buffer from path.

     paste-buffer [-dpr] [-b buffer-name] [-s separator] [-t target-pane]
                   (alias: pasteb)
             Insert the contents of a paste buffer into the specified pane.  If
             not specified, paste into the current one.  With -d, also delete
             the paste buffer.  When output, any linefeed (LF) characters in the
             paste buffer are replaced with a separator, by default carriage
             return (CR).  A custom separator may be specified using the -s
             flag.  The -r flag means to do no replacement (equivalent to a
             separator of LF).  If -p is specified, paste bracket control codes
             are inserted around the buffer if the application has requested
             bracketed paste mode.

     save-buffer [-a] [-b buffer-name] path
                   (alias: saveb)
             Save the contents of the specified paste buffer to path.  The -a
             option appends to rather than overwriting the file.

     set-buffer [-a] [-b buffer-name] [-n new-buffer-name] data
                   (alias: setb)
             Set the contents of the specified buffer to data.  The -a option
             appends to rather than overwriting the buffer.  The -n option
             renames the buffer to new-buffer-name.

     show-buffer [-b buffer-name]
                   (alias: showb)
             Display the contents of the specified buffer.

     Miscellaneous commands are as follows:

     clock-mode [-t target-pane]
             Display a large clock.

     if-shell [-bF] [-t target-pane] shell-command command [command]
                   (alias: if)
             Execute the first command if shell-command returns success or the
             second command otherwise.  Before being executed, shell-command is
             expanded using the rules specified in the FORMATS section,
             including those relevant to target-pane.  With -b, shell-command is
             run in the background.

             If -F is given, shell-command is not executed but considered
             success if neither empty nor zero (after formats are expanded).

                   (alias: lock)
             Lock each client individually by running the command specified by
             the lock-command option.

     run-shell [-b] [-t target-pane] shell-command
                   (alias: run)
             Execute shell-command in the background without creating a window.
             Before being executed, shell-command is expanded using the rules
             specified in the FORMATS section.  With -b, the command is run in
             the background.  After it finishes, any output to stdout is
             displayed in copy mode (in the pane specified by -t or the current
             pane if omitted).  If the command doesn't return success, the exit
             status is also displayed.

     wait-for [-L | -S | -U] channel
                   (alias: wait)
             When used without options, prevents the client from exiting until
             woken using wait-for -S with the same channel.  When -L is used,
             the channel is locked and any clients that try to lock the same
             channel are made to wait until the channel is unlocked with
             wait-for -U.

     tmux understands some unofficial extensions to terminfo(5):

     Cs, Cr  Set the cursor colour.  The first takes a single string argument
             and is used to set the colour; the second takes no arguments and
             restores the default cursor colour.  If set, a sequence such as
             this may be used to change the cursor colour from inside tmux:

                   $ printf '\033]12;red\033\\'

     Smulx   Set a styled underline.  The single parameter is one of: 0 for no
             underline, 1 for normal underline, 2 for double underline, 3 for
             curly underline, 4 for dotted underline and 5 for dashed underline.

     Ss, Se  Set or reset the cursor style.  If set, a sequence such as this may
             be used to change the cursor to an underline:

                   $ printf '\033[4 q'

             If Se is not set, Ss with argument 0 will be used to reset the
             cursor style instead.

     Tc      Indicate that the terminal supports the ‘direct colour’ RGB escape
             sequence (for example, \e[38;2;255;255;255m).

             If supported, this is used for the initialize colour escape
             sequence (which may be enabled by adding the ‘initc’ and ‘ccc’
             capabilities to the tmux terminfo(5) entry).

     Ms      Store the current buffer in the host terminal's selection
             (clipboard).  See the set-clipboard option above and the xterm(1)
             man page.

     tmux offers a textual interface called control mode.  This allows
     applications to communicate with tmux using a simple text-only protocol.

     In control mode, a client sends tmux commands or command sequences
     terminated by newlines on standard input.  Each command will produce one
     block of output on standard output.  An output block consists of a %begin
     line followed by the output (which may be empty).  The output block ends
     with a %end or %error.  %begin and matching %end or %error have two
     arguments: an integer time (as seconds from epoch) and command number.  For

           %begin 1363006971 2
           0: ksh* (1 panes) [80x24] [layout b25f,80x24,0,0,2] @2 (active)
           %end 1363006971 2

     The refresh-client -C command may be used to set the size of a client in
     control mode.

     In control mode, tmux outputs notifications.  A notification will never
     occur inside an output block.

     The following notifications are defined:

     %client-session-changed client session-id name
             The client is now attached to the session with ID session-id, which
             is named name.

     %exit [reason]
             The tmux client is exiting immediately, either because it is not
             attached to any session or an error occurred.  If present, reason
             describes why the client exited.

     %layout-change window-id window-layout window-visible-layout window-flags
             The layout of a window with ID window-id changed.  The new layout
             is window-layout.  The window's visible layout is
             window-visible-layout and the window flags are window-flags.

     %output pane-id value
             A window pane produced output.  value escapes non-printable
             characters and backslash as octal \xxx.

     %pane-mode-changed pane-id
             The pane with ID pane-id has changed mode.

     %session-changed session-id name
             The client is now attached to the session with ID session-id, which
             is named name.

     %session-renamed name
             The current session was renamed to name.

     %session-window-changed session-id window-id
             The session with ID session-id changed its active window to the
             window with ID window-id.

             A session was created or destroyed.

     %unlinked-window-add window-id
             The window with ID window-id was created but is not linked to the
             current session.

     %window-add window-id
             The window with ID window-id was linked to the current session.

     %window-close window-id
             The window with ID window-id closed.

     %window-pane-changed window-id pane-id
             The active pane in the window with ID window-id changed to the pane
             with ID pane-id.

     %window-renamed window-id name
             The window with ID window-id was renamed to name.

     ~/.tmux.conf       Default tmux configuration file.
     /etc/tmux.conf     System-wide configuration file.

     To create a new tmux session running vi(1):

           $ tmux new-session vi

     Most commands have a shorter form, known as an alias.  For new-session,
     this is new:

           $ tmux new vi

     Alternatively, the shortest unambiguous form of a command is accepted.  If
     there are several options, they are listed:

           $ tmux n
           ambiguous command: n, could be: new-session, new-window, next-window

     Within an active session, a new window may be created by typing ‘C-b c’
     (Ctrl followed by the ‘b’ key followed by the ‘c’ key).

     Windows may be navigated with: ‘C-b 0’ (to select window 0), ‘C-b 1’ (to
     select window 1), and so on; ‘C-b n’ to select the next window; and ‘C-b p’
     to select the previous window.

     A session may be detached using ‘C-b d’ (or by an external event such as
     ssh(1) disconnection) and reattached with:

           $ tmux attach-session

     Typing ‘C-b ?’ lists the current key bindings in the current window; up and
     down may be used to navigate the list or ‘q’ to exit from it.

     Commands to be run when the tmux server is started may be placed in the
     ~/.tmux.conf configuration file.  Common examples include:

     Changing the default prefix key:

           set-option -g prefix C-a
           unbind-key C-b
           bind-key C-a send-prefix

     Turning the status line off, or changing its colour:

           set-option -g status off
           set-option -g status-style bg=blue

     Setting other options, such as the default command, or locking after 30
     minutes of inactivity:

           set-option -g default-command "exec /bin/ksh"
           set-option -g lock-after-time 1800

     Creating new key bindings:

           bind-key b set-option status
           bind-key / command-prompt "split-window 'exec man %%'"
           bind-key S command-prompt "new-window -n %1 'ssh %1'"


     Nicholas Marriott <>

BSD                              March 25, 2013                              BSD