Path: utzoo!attcan!uunet!munnari.oz.au!uhccux!ames!haven!adm!smoke!gwyn
From: gwyn@smoke.BRL.MIL (Doug Gwyn)
Newsgroups: comp.unix.questions
Subject: Re: How to find out if stdout is piped?
Message-ID: <12137@smoke.BRL.MIL>
Date: 14 Feb 90 15:38:11 GMT
References: <7638@tank.uchicago.edu>
Reply-To: gwyn@brl.arpa (Doug Gwyn)
Organization: Ballistic Research Lab (BRL), APG, MD.
Lines: 4

In article <7638@tank.uchicago.edu> phd_ivo@gsbacd.uchicago.edu writes:
>find out if stdout is hooked to a pipe, or redirected into a file?

use fstat(1,...)