Path: utzoo!attcan!uunet!mcvax!unido!sbsvax!greim
From: greim@sbsvax.UUCP (Michael Greim)
Newsgroups: comp.unix.questions
Subject: Re: Csh question
Summary: here is the answer
Message-ID: <565@sbsvax.UUCP>
Date: 25 Jul 88 12:00:10 GMT
References: <8807191241.AA18881@decwrl.dec.com>
Organization: Universitaet des Saarlandes, Saarbruecken, West Germany
Lines: 33

In article <8807191241.AA18881@decwrl.dec.com>, ellis@ultra.dec.com (David Ellis) writes:
< In the csh, the expression $name or ${name} looks up the variable with the
< given name and substitutes its value.
< 
< Is there any way to get the value of a variable whose name is the value of
< another variable?
< 
< e.g. if we've done set x=a and set a=3, is there any simple csh expression
< in terms of x that yields the value of a (3)?
< 
< Csh gives an error message "Variable syntax." if I try something like
< 	echo ${$x}
< or even
< 	echo "`echo {\$}$x`"
< 
< ----
< David Ellis
Yes. Here it is:
	eval echo \$$x

Works in all csh's I could get my hands on quickly.

	-mg
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