Path: utzoo!utgpu!watmath!clyde!att!cbnews!lvc
From: lvc@cbnews.ATT.COM (Lawrence V. Cipriani)
Newsgroups: comp.unix.questions
Subject: Re: correct isatty usage
Summary: test
Message-ID: <4319@cbnews.ATT.COM>
Date: 24 Feb 89 08:02:36 GMT
References: <18432@adm.BRL.MIL> <1161@tikal.Teltone.COM>
Organization: AT&T Network Systems
Lines: 20

In article <1161@tikal.Teltone.COM>, dave@tikal.Teltone.COM (news) writes:
+ Now my question is, how would you do this in a script?  Either C or Bourne.
+ In C shell, I have this code, but it doesn't appear to work.
+ 
+ if ({`test -t 0`}) then
+     echo -n "==> "
+ else
+     echo -n "--> "
+ endif

What you want is (Bourne shell or Korn shell):

	if [ -t 0 ]
	then
		echo stdin is a terminal
	else
		echo stdin is not a terminal
	fi
-- 
Larry Cipriani, att!cbnews!lvc or lvc@cbnews.att.com