ismpx(1)                (AT&T 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; i.e., 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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