ismpx(1)           UNIX System V(Layers Windowing Utilities)           ismpx(1)


NAME
      ismpx - return windowing terminal state

SYNOPSIS
       ismpx [-s]

DESCRIPTION
      The ismpx command reports whether its standard input is connected to a
      multiplexed xt channel; that is, whether it's running under layers or
      not.  It is useful for shell scripts that download programs to a
      windowing terminal.

      ismpx prints yes and returns 0 if invoked under layers, and prints no and
      returns 1 otherwise.

      -s      Do not print anything; just return the proper exit status.

SEE ALSO
      layers(1), jwin(1), xt(7)

EXAMPLE
      if ismpx -s
      then
            jwin
      fi





























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