From owner-freebsd-questions  Tue Jun 26 13:40:19 2001
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Date: Tue, 26 Jun 2001 14:40:16 -0600
From: Chris Wasser <cwasser@v-wave.com>
To: Daniel Frazier <dfrazier@magpage.com>
Cc: questions@FreeBSD.ORG
Subject: Re: dns tool for reverse lookup of network range needed
Message-ID: <20010626144016.A555@skunkworks.arpa.mil>
References: <NFBBKAEAALGGGFKINBLAIEENCAAA.peter@sysadmin-inc.com> <3B38EED3.F5E33696@magpage.com> <3B38EFE1.D7429B57@magpage.com>
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In-Reply-To: <3B38EFE1.D7429B57@magpage.com>; from dfrazier@magpage.com on Tue, Jun 26, 2001 at 04:26:09PM -0400
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On Tue 26 Jun 2001, Daniel Frazier wrote:
> eh, you can take out the "echo $x" to make the output a bit more
> readable.
> 
> $ x=0; while [ $x -lt 255 ]; do host 216.155.24.$x; x=`echo "$x + 1"
> | bc`; done

 You could also use expr, saving on the pipe to bc(1):
 
 $ x=0; while [ $x -lt 255 ]; do host 216.155.24.$x; x=`expr $x '+' 1`;
   done

 My two cents...
 
 - Chris
 

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