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From: jeff@onion.pdx.com (Jeff Beadles)
Newsgroups: comp.unix.questions
Subject: Re: How to tell if a process exists
Message-ID: <1990Aug15.231537.2889@onion.pdx.com>
Date: 15 Aug 90 23:15:37 GMT
References: <3817@auspex.auspex.com> <1823@necisa.ho.necisa.oz> <7733@amelia.nas.nasa.gov>
Organization: Little to none
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samlb@pioneer.arc.nasa.gov.UUCP (Sam Bassett RCS) writes:
>boyd@necisa.ho.necisa.oz (Boyd Roberts) writes:
>>Wrong.  RTFM --  kill(pid, 0)

>	Hmmm -- must be running Reverse Polish Unix down under, 'cause my
>manual sez: " kill [-sig] processid... ", and I've been doing it that way
>for a looooooooong time.

>	What kind of UNIX _are_ you running??

Well, most any modern variant.  The kill(pid,0) version is for the 'C'
programming language.  See the kill(2) man page.

kill -SIG pid is a simple C program that's called by the shell.


	-Jeff
-- 
Jeff Beadles    jeff@onion.pdx.com