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From: wescott@ncrcae.Columbia.NCR.COM (Mike Wescott)
Newsgroups: comp.unix.questions
Subject: Re: How to tell if a process is active?
Keywords: process
Message-ID: <4608@ncrcae.Columbia.NCR.COM>
Date: 15 Jun 89 13:14:52 GMT
References: <2727@infocenter.UUCP>
Reply-To: wescott@ncrcae.Columbia.NCR.COM (Mike Wescott)
Organization: NCR Corp., Engineering & Manufacturing - Columbia, SC
Lines: 18

In article <2727@infocenter.UUCP> mhoffman@infocenter.UUCP (Mike Hoffman) writes:
> 
> I have an application in which I need to check to see if a process
> is currently active. 

Try:

isactive(pid)
	if(kill(pid,0)==0 || errno == EPERM)
		return(process is active)
	else 
		return(process is not active)

see kill(2).

-- 
	-Mike Wescott
	 mike.wescott@ncrcae.Columbia.NCR.COM