Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!njin!princeton!phoenix!pfalstad
From: pfalstad@phoenix.Princeton.EDU (Paul John Falstad)
Newsgroups: comp.unix.questions
Subject: Re: Eval troubles in sh (1)
Message-ID: <2487@idunno.Princeton.EDU>
Date: 13 Sep 90 19:27:44 GMT
References: <1990Sep13.181238.4388@ecn.purdue.edu>
Sender: news@idunno.Princeton.EDU
Distribution: usa
Organization: Princeton University, Princeton, New Jersey
Lines: 17

In article <1990Sep13.181238.4388@ecn.purdue.edu> irick@ecn.purdue.edu (GarBear Irick) writes:
>one=YES
>VAR=one
>eval echo VAR from echo: \$$VAR
>tmp1=`eval echo \$$VAR`
>eval tmp2=`eval echo \$$VAR`
>echo TMP1: $tmp1
>echo TMP2: $tmp2

sh removes backslashes inside backquotes.  Try these lines instead:

tmp1=`eval echo \\\$\$VAR`
eval tmp2=`eval echo \\\$\$VAR`

This will produce YES both times.

  David Hemmings appeared by permission of the National Forestry Commission.