Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!uwm.edu!rutgers!mcnc!duke!macbeth!khera
From: khera@macbeth.cs.duke.edu (Vick Khera)
Newsgroups: comp.unix.questions
Subject: Re: Login shell?
Message-ID: <16412@duke.cs.duke.edu>
Date: 10 Dec 89 02:59:40 GMT
References: <2975@usceast.UUCP>
Sender: news@duke.cs.duke.edu
Reply-To: khera@cs.duke.edu (Vick Khera)
Distribution: usa
Organization: Duke University CS Dept.; Durham, NC
Lines: 16

In article <2975@usceast.UUCP> sridhar@usceast.uucp.UUCP (M. A. Sridhar) writes:
>Is there any way to determine, within a shell script (csh), whether the script 
>is being executed by the login shell? I know that one can use the fact that
>$prompt is set to detect an interactive shell, but I don't know how to test
>whether it's the login shell.

the trick i use is to check for the existence of a particular environment
variable (such as NAME) that i set in my .login file, since it is run after
the .cshrc file is.  if this variable is set, then most likely the shell is
not a login shell, otherwise i assume it is.

							v.
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Vick Khera                              Department of Computer Science
ARPA:   khera@cs.duke.edu               Duke University
UUCP:   ..!{mcnc,decvax}!duke!khera     Durham, NC 27706