Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!ogicse!iwarp.intel.com!news
From: merlyn@iwarp.intel.com (Randal Schwartz)
Newsgroups: comp.unix.wizards
Subject: Re: nested loops
Message-ID: <1990Aug10.072359.5923@iwarp.intel.com>
Date: 10 Aug 90 07:23:59 GMT
References: <4103@herbie.misemi> <7318@helios.TAMU.EDU>
Sender: news@iwarp.intel.com
Reply-To: merlyn@iwarp.intel.com (Randal Schwartz)
Organization: Stonehenge; netaccess via Intel, Beaverton, Oregon, USA
Lines: 38
In-Reply-To: skdutta@cs.tamu.edu (Saumen K Dutta)

In article <7318@helios.TAMU.EDU>, skdutta@cs (Saumen K Dutta) writes:
| this="one two three"
| that="four five six seven"
| them="eight nine ten"
| all="this that them"
| #
| for i in $all
| do
| k='eval echo $`echo $i`'
| for j in `eval $k`
| do
| echo $i $j 
| done
| done

Waaaaayyyy too many eval's and echo's.  Try this:

#!/bin/sh
this="one two three"
that="four five six seven"
them="eight nine ten"
all="this that them"
for i in $all
do
	eval 'for j in $'$i'
	do
		echo $i $j
	done'
done

And look, I didn't mention Perl once (oops!).

(But why is this in wizards?  Sigh.)
-- 
/=Randal L. Schwartz, Stonehenge Consulting Services (503)777-0095 ==========\
| on contract to Intel's iWarp project, Beaverton, Oregon, USA, Sol III      |
| merlyn@iwarp.intel.com ...!any-MX-mailer-like-uunet!iwarp.intel.com!merlyn |
\=Cute Quote: "Welcome to Portland, Oregon, home of the California Raisins!"=/