On 15Apr2008 12:09, Don Russell <fedora@xxxxxxxxxxxxxxxxxxxxx> wrote: | On Tue, Apr 15, 2008 at 11:08 AM, Patrick O'Callaghan <pocallaghan@xxxxxxxxx> | 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 | > and work from there. | | That looks promising... thanks :-) Promising, but will work only on Linux. That may be enough for you, but you shouldn't forget that it's nonportable. You can probably make that `cat|grep|cut` into a single `sed` at some performance benefit. Another approach is to alter your shell environment to always set and export an environment variable when starting vi (by invoking vi via a wrapper script or alias or shell function) and then just checking for it. Cheers, -- Cameron Simpson <cs@xxxxxxxxxx> DoD#743 http://www.cskk.ezoshosting.com/cs/ Love ...yeah, that's the feeling you get when you like something as much as your motorcycle. - Sonny Barger (as told to Russ Hughes by Ed Campbell, who has an old friend who was there at the time)
