resize

RESIZE(1)                       X Window System                      RESIZE(1)



NAME
       resize - set environment and terminal settings to current xterm window
       size

SYNOPSIS
       resize [ -v | -u | -c ] [ -s [ row col ] ]

DESCRIPTION
       Resize prints a shell command for setting the appropriate environment
       variables to indicate the current size of xterm window from which the
       command is run.

       Resize determines the command through several steps:

       ·   first, it finds the name of the user's shell program.  It uses the
           SHELL variable if set, otherwise it uses the user's data from
           /etc/passwd.

       ·   then it decides whether to use Bourne shell syntax or C-Shell
           syntax.  It uses a built-in table of known shells, which can be
           overridden by the -u and -c options.

       ·   then resize asks the operating system for the terminal settings.
           This is the same information which can be manipulated using stty.

       ·   then resize asks the terminal for its size in characters.
           Depending on whether the "-s option is given, resize uses a
           different escape sequence to ask for this information.

       ·   at this point, resize attempts to update the terminal settings to
           reflect the terminal window's size in pixels:

           ·   if the -s option is used, resize then asks the terminal for its
               size in pixels.

           ·   otherwise, resize asks the operating system for the information
               and updates that after ensuring that the window's dimensions
               are a multiple of the character height and width.

           ·   in either case, the updated terminal settings are done using a
               different system call than used for stty.

       ·   then resize updates the terminal settings to reflect any altered
           values such as its size in rows or columns.  This affects the
           values shown by stty.

       ·   finally, resize generates shell commands for setting the
           environment variables, and writes that to the standard output.

EXAMPLES
       For resize's output to take effect, resize must either be evaluated as
       part of the command line (usually done with a shell alias or function)
       or else redirected to a file which can then be read in.  From the C
       shell (usually known as /bin/csh), the following alias could be defined
       in the user's .cshrc:

               %  alias rs 'set noglob; eval `resize`'

       After resizing the window, the user would type:

               %  rs

       Users of versions of the Bourne shell (usually known as /bin/sh) that
       don't have command functions will need to send the output to a
       temporary file and then read it back in with the “.” command:

               $  resize > /tmp/out
               $  . /tmp/out

OPTIONS
       The following options may be used with resize:

       -c      This option indicates that C shell commands should be generated
               even if the user's current shell does not appear to use C shell
               syntax.

       -s [rows columns]
               This option indicates that Sun console escape sequences will be
               used instead of the VT100-style xterm escape codes.  If rows
               and columns are given, resize will ask the xterm to resize
               itself using those values.

               Both of the escape sequences used for this option (first to
               obtain the window size and second to modify it) are subject to
               xterm's allowWindowOps resource setting.  The window manager
               may also choose to disallow the change.

               The VT100-style escape sequence used to determine the screen
               size always works for VT100-compatible terminals.  VT100s have
               no corresponding way to modify the screensize.

       -u      This option indicates that Bourne shell commands should be
               generated even if the user's current shell does not appear to
               use Bourne shell syntax.

       -v      This causes resize to print a version number to the standard
               output, and then exit.

       Note that the Sun console escape sequences are recognized by XFree86
       xterm and by dtterm.  The resize program may be installed as sunsize,
       which causes makes it assume the -s option.

       The rows and columns arguments must appear last; though they are
       normally associated with the -s option, they are parsed separately.

FILES
       /etc/termcap   for the base termcap entry to modify.

       ~/.cshrc       user's alias for the command.

ENVIRONMENT
       SHELL          Unless overridden by the -c option, resize determines
                      the user's current shell by

                      ·   first checking if $SHELL is set, and using that,

                      ·   otherwise resize looks in the password file
                          (/etc/passwd).

                      Generally Bourne-shell variants (including ksh) do not
                      modify $SHELL, so it is possible for resize to be
                      confused if one runs resize from a Bourne shell spawned
                      from a C shell.

                      After determining the user's shell, resize  checks the
                      shell's name against a table of known shell names.  If
                      it does not find the name in its table, resize will use
                      C shell syntax for the generated commands to set
                      environment variables.

       TERM           Resize's generated shell command sets this to "xterm" if
                      not already set.

       TERMCAP        Resize's generated shell command sets this variable on
                      systems using termcap, e.g., when resize is linked with
                      the termcap library rather than a terminfo library.  The
                      latter does not provide the complete text for a termcap
                      entry.

       COLUMNS, LINES Resize's generated shell command sets these variables on
                      systems using terminfo.  Many applications (including
                      the curses library) use those variables when set to
                      override their screensize.

SEE ALSO
       use_env(3x)
       csh(1), stty(1), tset(1)
       xterm(1)

AUTHORS
       Mark Vandevoorde (MIT-Athena), Edward Moy (Berkeley)
       Thomas Dickey (invisible-island.net).
       Copyright (c) 1984, 1985 by X Consortium
       See X(1) for a complete copyright notice.



Patch #347                        2019-06-30                         RESIZE(1)