ismpx

ismpx

 [

option

]

Test whether standard input is running under layers . (Command name comes from " Is the m ulti p le x or running?") Output is either yes (exit status 0) or no (exit status 1). Useful for shell scripts that send programs to a windowing terminal or depend on screen size.

Option

-s

Suppress output and return exit status only.

Example shell script

if ismpx -s
then jwin
fi