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From: jerryp@tektools.UUCP (Jerry Peek)
Newsgroups: comp.unix.questions
Subject: Re: Is there a Bourne-shell .logout script?
Message-ID: <1950@tektools.UUCP>
Date: Thu, 4-Dec-86 18:46:18 EST
Article-I.D.: tektools.1950
Posted: Thu Dec  4 18:46:18 1986
Date-Received: Sun, 7-Dec-86 20:46:05 EST
References: <502@cdx39.UUCP> <1051@ptsfb.UUCP>
Reply-To: jerryp@tektools.UUCP (Jerry Peek)
Organization: Tektronix, Inc., Beaverton, OR.
Lines: 32
Keywords: logout exit Bourne shell

In article <1051@ptsfb.UUCP> rob@ptsfb.UUCP (Rob Bernardo) writes:
> In article <502@cdx39.UUCP> jc@cdx39.UUCP (John Chambers) writes:
> >The C-shell runs a script called $home/.logout when you tell
> >it to log you out.  Is there any way to get the Bourne shell
> >to do something similar?
> 
> How about putting:
> 	trap "$HOME/.logout" 0
> in your .profile (or in /etc/profile)?

Not quite.  Unless your Bourne Shell is different than mine (4.3BSD),
this trap *starts a child Bourne Shell* to read the .logout file.
This means that shell variables and stuff you've set in your
login shell *won't be available* when the .logout file is read.

On the other hand, in the C-shell, the .logout file is read *directly by
the login shell*.  This lets your .logout test for the presence of shell
variables which were set in the login shell.  For instance, I set up some
shell variables that tell me whether the login shell came from a remote
machine (rlogin) or not, and do different things in those cases.

The fix is easy... use this "trap" instead:
 	trap ". $HOME/.sh_logout" 0
The leading "." tells the login Bourne shell to read the ".sh_logout" file
directly into itself, instead of spawning a child shell.  (I name mine
".sh_logout" because it has Bourne-shell contents that csh would choke on.)

--Jerry Peek, Tektronix, Inc.
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