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From: ed@lvw6.lvw.loral.com (Ed Allen)
Newsgroups: comp.unix.questions
Subject: Re: Inserting Blank Line into File (sed/awk/?)
Message-ID: <ED.91Mar15201957@lvw6.lvw.loral.com>
Date: 16 Mar 91 04:19:57 GMT
References: <807@oss670.UUCP>
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In-Reply-To: tkevans@oss670.UUCP's message of 15 Mar 91 14:18:19 GMT

Now for the 'sed' solution....

sed -n -e '{N;N;p;a\

}' filename

Should work from 'sh', 'csh' is more particular about multi-line
arguments.
--
Never trust a man who wears white shoes.           | Ed Allen
Vote Libertarian...     Scare the Hell out of 'em. | Loral Command & Contr. Sys.