<div class="gmail_quote">On Wed, Apr 16, 2008 at 8:44 AM, Patrick O'Callaghan <<a href="mailto:pocallaghan@gmail.com">pocallaghan@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> <div class="Ih2E3d"> On Wed, 2008-04-16 at 10:41 -0400, Bill Davidsen wrote: > Patrick O'Callaghan wrote: > > On Tue, 2008-04-15 at 10:49 -0700, Don Russell wrote: > >> How can I tell, from a Korn shell script, if the script is running in > >> a vi sub-shell? > >> > >> I have a script that has a problem when run from a vi subshell, and > >> I'd like to check for that condition and just issue an error message. > >> (I know that's not the solution to the problem, but the thing that > >> fails is being replaced, so this is a temporary "fix") > > > > Try: > > > > ls -l /proc/`cat /proc/$$/status|grep PPid|cut -f2`/exe > > What on Earth are you doing here? > 1) unless you have some reason to doubt the value of $PPID, you are just > making this look complex > 2) if this is a login shell, you will not have permission to read the > exe symbolic link. > 3) you probably just want to see if /proc/$PPIC/cmdline matches vi </div>Duh, yes. The OP wants to know if his script is being executed from 'vi'. That's one way to do it. You're right about the permissions of course, my bad, but using $PPID doesn't change that in the script. Here's a better one: ps -p $PPID -o comm= </blockquote></div> That's GREAT! It's exactly what I need.... and bonus points for it working on other platforms too ;-) Thank you :-)