Path: utzoo!attcan!uunet!mcsun!ukc!warwick!cudcv
From: cudcv@warwick.ac.uk (Rob McMahon)
Newsgroups: comp.unix.questions
Subject: Re: How to alias 'exit' in csh?
Message-ID: <209@titania.warwick.ac.uk>
Date: 23 Sep 89 10:43:10 GMT
References: <770@rodan.acs.syr.edu> <3301@solo9.cs.vu.nl> <38719@bu-cs.BU.EDU>
Reply-To: cudcv@warwick.ac.uk (Rob McMahon)
Organization: Computing Services, Warwick University, UK
Lines: 29

In article <38719@bu-cs.BU.EDU> madd@std.com writes:
>Use:
>	alias exit "source ~/.logout ; 'exit'"
>Aliasing doesn't happen on quoted names, which I often make use of when I
>really, really want to override my aliasing.

I replied to the author, but it occurred to me that this is a useful trick
that people might not know.  The above doesn't work, because quoting avoids
builtins as well as aliases, so it tries to look for a non-builtin command
called exit, which it doesn't find.  However

	alias exit "source ~/.logout ; ''exit"

does work, it avoids aliases but will still catch builtins.  This is useful if
someone nasty manages to alias your alias and unalias commands for you (with

	alias \unalias ...
	alias \alias ...

csh won't normally let you alias alias).  You just do

	''unalias alias
	unalias unalias

Rob
-- 
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Rob McMahon, Computing Services, Warwick University, Coventry CV4 7AL, England