doubt in .cshrc

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resize

RESIZE(1)                                                     General Commands Manual                                                    RESIZE(1)

NAME

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

SYNOPSIS

       resize [ -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.  For this 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 tempo-
       rary file and then read it back in with the "." command:

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

       Resize determines the user's current shell by first checking if $SHELL is set, and using that.  Otherwise it determines the user's shell by
       looking in the password file.  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.

OPTIONS

       The following options may be used with resize:

       -u      This option indicates that Bourne shell commands should be generated even if the user's current shell isn't /bin/sh.

       -c      This option indicates that C shell commands should be generated even if the user's current shell isn't /bin/csh.

       -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.  However, the window manager may choose to disallow the change.

       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

       TERM           set to "xterm" if not already set.

       TERMCAP        variable set on systems using termcap

       COLUMNS, LINES variables set on systems using terminfo

SEE ALSO

       csh(1), tset(1), xterm(1)

AUTHORS

       Mark Vandevoorde (MIT-Athena), Edward Moy (Berkeley)
       Copyright (c) 1984, 1985 by X Consortium
       See X(7) for a complete copyright notice.

                                                                  X Window System                                                        RESIZE(1)

UNIX for Dummies Questions & Answers