Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!uwm.edu!mixcom!rrvvrr
From: rrvvrr@mixcom.UUCP (Bill Suetholz)
Newsgroups: comp.unix.internals
Subject: Re: puzzle
Message-ID: <45@mixcom.UUCP>
Date: 30 Nov 90 00:32:47 GMT
References: <1990Nov27.003659.3521@informix.com>
Reply-To: rrvvrr@mixcom.UUCP (Bill Suetholz)
Distribution: usa
Organization: MIX: Milwaukee Information eXchange (Public access Usenet, Email)
Lines: 29


I tried this shell script and it performs as requested...

-----------------------------CUT HERE -------------------------------------
#!/bin/sh
first_time="first_time"
second_time="second_time"

PREFIX="first second"
SUFFIX="time"

for WORDS in $PREFIX
do

	eval ITERATION=\$${WORDS}_${SUFFIX}

    echo "Iteration is $ITERATION"
done

exit 0
----------------------------------------------------------------------------

A few things to note:
   1)  the line with the eval was supposed to have WORDS not PREFIX in it.
   2)  use eval to get shell to evaluate the line twice;
       once for $WORDS and $SUFFIX and once for $first_time or $second_time.


Bill Suetholz (bills@mixcom.UUNET)