PSTREE(1)                         User Commands                        PSTREE(1)

       pstree - display a tree of processes

       pstree [-a, --arguments] [-c, --compact-not] [-C, --color attr]
       [-g, --show-pgids] [-h, --highlight-all, -H pid, --highlight-pid pid]
       [-l, --long] [-n, --numeric-sort] [-N, --ns-sort ns] [-p, --show-pids]
       [-s, --show-parents] [-S, --ns-changes] [-t, --thread-names] [-T, --hide-
       threads] [-u, --uid-changes] [-Z, --security-context]
       [-A, --ascii, -G, --vt100, -U, --unicode] [pid, user]
       pstree -V, --version

       pstree shows running processes as a tree.  The tree is rooted at either
       pid or init if pid is omitted.  If a user name is specified, all process
       trees rooted at processes owned by that user are shown.

       pstree visually merges identical branches by putting them in square
       brackets and prefixing them with the repetition count, e.g.




       Child threads of a process are found under the parent process and are
       shown with the process name in curly braces, e.g.


       If pstree is called as pstree.x11 then it will prompt the user at the end
       of the line to press return and will not return until that has happened.
       This is useful for when pstree is run in a xterminal.

       Certain kernel or mount parameters, such as the hidepid option for
       procfs, will hide information for some processes. In these situations
       pstree will attempt to build the tree without this information, showing
       process names as question marks.

       -a     Show command line arguments.  If the command line of a process is
              swapped out, that process is shown in parentheses.  -a implicitly
              disables compaction for processes but not threads.

       -A     Use ASCII characters to draw the tree.

       -c     Disable compaction of identical subtrees.  By default, subtrees
              are compacted whenever possible.

       -C     Color the process name by given attribute. Currently pstree only
              accepts the value age which colors by process age.  Processes
              newer than 60 seconds are green, newer than an hour yellow and the
              remaining red.

       -g     Show PGIDs.  Process Group IDs are shown as decimal numbers in
              parentheses after each process name.  -g implicitly disables
              compaction.  If both PIDs and PGIDs are displayed then PIDs are
              shown first.

       -G     Use VT100 line drawing characters.

       -h     Highlight the current process and its ancestors.  This is a no-op
              if the terminal doesn't support highlighting or if neither the
              current process nor any of its ancestors are in the subtree being

       -H     Like -h, but highlight the specified process instead.  Unlike with
              -h, pstree fails when using -H if highlighting is not available.

       -l     Display long lines.  By default, lines are truncated to either the
              COLUMNS environment variable or the display width.  If neither of
              these methods work, the default of 132 columns is used.

       -n     Sort processes with the same parent by PID instead of by name.
              (Numeric sort.)

       -N     Show individual trees for each namespace of the type specified.
              The available types are: ipc, mnt, net, pid, time, user, uts.
              Regular users don't have access to other users' processes
              information, so the output will be limited.

       -p     Show PIDs.  PIDs are shown as decimal numbers in parentheses after
              each process name.  -p implicitly disables compaction.

       -s     Show parent processes of the specified process.

       -S     Show namespaces transitions.  Like -N, the output is limited when
              running as a regular user.

       -t     Show full names for threads when available.

       -T     Hide threads and only show processes.

       -u     Show uid transitions.  Whenever the uid of a process differs from
              the uid of its parent, the new uid is shown in parentheses after
              the process name.

       -U     Use UTF-8 (Unicode) line drawing characters.  Under Linux 1.1-54
              and above, UTF-8 mode is entered on the console with echo -e
              ' 33%8' and left with echo -e ' 33%@'.

       -V     Display version information.

       -Z     Show the current security attributes of the process. For SELinux
              systems this will be the security context.

       /proc  location of the proc file system

       Some character sets may be incompatible with the VT100 characters.

       ps(1), top(1), proc(5).

psmisc                             2021-01-05                          PSTREE(1)