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From: ag@amix.commodore.com (Keith Gabryelski)
Newsgroups: comp.unix.wizards,comp.unix.questions,comp.lang.c
Subject: Re: Getting PID of background process in shell script.
Message-ID: <304@amix.commodore.com>
Date: 28 Mar 90 21:49:20 GMT
References: <3074@auspex.auspex.com>
Reply-To: ag@amix.commodore.com (Keith Gabryelski)
Followup-To: comp.unix.questions
Organization: Commodore Amix Development
Lines: 27

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In article <3074@auspex.auspex.com> hitz@auspex.auspex.com (Dave Hitz) writes:
>In a shell script I want to start a process in the background and then
>kill it at some later time.  To do this I want to save it's pid in a
>variable.

From your example (not shown) you seem to be using the bourne shell
which has the ``$!'' notation for the last background process
executed.

So a shell script of the form:

	sleep 10000 &			# Through in a background process.
	ps				# Ps will show us what is running.
	echo Sleeps PID is $!
	sleep 3
	echo Killing PID $!
	kill $!				# Kill the backgrounf process.
	ps				# We should see the sleep anymore.

Should be an example of what you are trying to do.

Pax, Keith
-- 
ag@amix.commodore.com        Keith Gabryelski          ...!cbmvax!amix!ag