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Date:      Fri, 18 Jan 2008 11:09:14 -0600
From:      Paul Schmehl <>
To:        FreeBSD Questions <>
Subject:   Shell scripting kungfu
Message-ID:  <>

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I need to do the following:

Take a list of various strings, one of which is a quoted IP address, and 
extract the IPs.  (Done that.)

Then take the list of IPs and convert them to a list of IPs with masks on a 
single line.

IOW, I have converted the original list to this:


Now I need to remove the newlines and add /32, to the end of each IP so that I 
have this:

I got close with sed, but I'm not quite there.

I got this:


Here's the code I used:
cat hostlist | cut -d',' -f2 | cut -d'"' -f2 | sort | uniq | grep -v "inet" | 
sed '/[^*]$/N;s/\n */\/32,/'

What am I missing?

Paul Schmehl (
Senior Information Security Analyst
The University of Texas at Dallas

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