Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!newstop!texsun!texbell!ficc!peter
From: peter@ficc.ferranti.com (Peter da Silva)
Newsgroups: comp.unix.questions
Subject: Re: Diffs to the Frequently Asked Questions postings
Message-ID: <5OG4:O@xds13.ferranti.com>
Date: 5 Jul 90 20:02:28 GMT
References: <49557@iuvax.cs.indiana.edu>
Reply-To: peter@ficc.ferranti.com (Peter da Silva)
Organization: Xenix Support, FICC
Lines: 10

In article <49557@iuvax.cs.indiana.edu> sahayman@iuvax.cs.indiana.edu (Steve Hayman) writes:
> ! 22) How can a process detect if it's running in the background?

	First of all: do you want to know if you're running in the background,
	or if you're running interactively? If you're deciding whether or
	not you should print prompts and the like, that's probably a better
	criterion. Check if standard input is a terminal:

		sh: if [ -t 0 ]; then ... fi
		C: if(isatty(0)) { ... }
-- 
Peter da Silva.   `-_-'
+1 713 274 5180.
<peter@ficc.ferranti.com>