Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!lll-winken!ames!dftsrv!chris
From: chris@asylum.gsfc.nasa.gov (Chris Shenton)
Newsgroups: comp.unix.shell
Subject: Re: Delayed evaluation of csh variables?
Message-ID: <CHRIS.90Dec11123753@asylum.gsfc.nasa.gov>
Date: 11 Dec 90 17:37:53 GMT
References: <CHRIS.90Dec10160308@asylum.gsfc.nasa.gov>
	<110255@convex.convex.com>
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In-reply-to: tchrist@convex.COM's message of 11 Dec 90 00:24:07 GMT

Thanks to everyone who responded (mail and posts) on my query. This is a
``best-of'' from the suggestions.

1. The quoting can be simplified by nixing the " and using ' instead.
2. Eval -- this is the key -- is needed to instantiate the variable in the
   string. 


Here's the simplest example thing I've come up with:

	#!/bin/csh -vxf			# show whazzup; ignore .cshrc
	set COMMAND = 'ls -l $File'	# simple single quotes do the trick
	foreach File ( $* )		# do all command line arguments
		eval $COMMAND		# eval to instantiate $File
	end

tchrist@convex.com insists that I shouldn't be doing any programming in
csh. Probably true, but I'm too lazy to get intimate with sh for such short
stuff. (I'd rather learn bash!) 


Again, many thanks to everyone.

Ciao!

--
chris@asylum.gsfc.nasa.gov, ...!uunet!asylum.gsfc.nasa.gov!chris, PITCH::CHRIS