Newsgroups: comp.unix.shell
Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!uupsi!cmcl2!phri!marob!daveh
From: daveh@marob.uucp (Dave Hammond)
Subject: Re: deleting some empty lines with sed
Organization: ESCC, New York City
Date: Tue, 30 Apr 91 18:14:50 GMT
Message-ID: <281DB41B.9E6@marob.uucp>
Summary: use tr -s '\012'
References: <1991Apr27.143519.26256@daimi.aau.dk>
Lines: 22

In article <1991Apr27.143519.26256@daimi.aau.dk> datpete@daimi.aau.dk (Peter Andersen) writes:
>I have some source-files that I produce documentation from.
>
>I use sed to make a few changes to the text. I have figured
>most of it out, but I have one problem remaining:
>If two or more blank lines appear, I want to remove all but
>one of these.
>[sed example deleted]
>Does anyone have a way of doing this, perhaps using something
>else but sed. I'm not a perl-guru, but if its possible in perl
>I'd like to hear about that too.

Perhaps I'm oversimplifying the problem, but wouldn't

tr -s '\012'

squeeze multiple, consecutive newlines to a single newline?

--
Dave Hammond
daveh@marob.uucp
uunet!rutgers!phri!marob!daveh