[LUNI] Kill previous command?

[Mike Scott]

I have seen a combination of piping the ps command through grep using
the command name to locate the PID and feeding that to kill. 'cat' may
be a bit ambiguous so you might want to launch one script to start the
process then fire off another to nuke it.

Also, if you fire off the cat command in the background (append an
ampersand to the end) with backticks around it, it should return the
PID, which you can save in an environment variable and use that later
to kill it.

- Mike Scott


> -------- Original Message --------
> Subject: [LUNI] Kill previous command?
> From: "Michael Labowicz" <mlabowicz at gmail.com>
> Date: Wed, June 20, 2007 10:30 am
> To: "Linux Users Of Northern Illinois - Technical Discussion"
> <luni at luni.org>
> 
> Dear Luni,
> I'm looking to record some FM radio off of my ivtv-compatible hardware
> encoding card.  I'm currently planning on calling a script like this
> through
> a cron job and ending it through the use of a combination of sleep and
> kill:
> 
> #! /bin/sh
> cat /dev/video24 > recording.wav & sleep 3h
> kill (previous process?)
> 
> Problem is, I'm not sure how to kill the previous command, I know it has
> something to do with the ! symbol, but I can't seem to find how to do it.
> Any ideas?
> 
> Thanks in advance!
> 
> -- 
> Michael Labowicz
> http://www.labowicz.com/blog/
> -- 
> Linux Users Of Northern Illinois - Technical Discussion 
> http://luni.org/mailman/listinfo/luni