Path: utzoo!attcan!uunet!husc6!cmcl2!adm!smoke!gwyn
From: gwyn@smoke.BRL.MIL (Doug Gwyn )
Newsgroups: comp.unix.wizards
Subject: Re: filename substitution question
Message-ID: <9995@smoke.BRL.MIL>
Date: 6 Apr 89 05:33:37 GMT
References: <1627@ncar.ucar.edu> <15131@bellcore.bellcore.com> <1083@vsi.COM>
Reply-To: gwyn@brl.arpa (Doug Gwyn (VLD/VMB) <gwyn>)
Organization: Ballistic Research Lab (BRL), APG, MD.
Lines: 5

In article <1083@vsi.COM> friedl@vsi.COM (Stephen J. Friedl) writes:
>> 	ls | grep -v frog.c
>Be careful here.  Many versions of ls columnize their output, ...

But not when their standard output is other than a terminal (!isatty(1)).