Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!lll-winken!uunet!mcvax!hp4nl!philmds!leo
From: leo@philmds.UUCP (Leo de Wit)
Newsgroups: comp.unix.wizards
Subject: Re: Detecting Pipe Using Bourne Shell
Message-ID: <999@philmds.UUCP>
Date: 8 Apr 89 10:01:28 GMT
References: <18992@adm.BRL.MIL>
Reply-To: leo@philmds.UUCP (Leo de Wit)
Organization: Philips I&E DTS Eindhoven
Lines: 16

In article <18992@adm.BRL.MIL> ifenn%ee.surrey.ac.uk@nss.cs.ucl.ac.uk (Ian Fenn) writes:
    []
|The only problem with this is that I cannot pipe the output from another 
|program into it because it drops into the main menu and out again! Probably 
|due to the test for arguments. Can anyone therefore tell me how to detect a 
|pipe using Sh, so that the following will work? Or suggest another way 
|round the problem?

if test -t 0
then
    # stdin from terminal
else
    # stdin not from terminal
fi

    Leo.