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Full Discussion: Find and Replace
Top Forums Shell Programming and Scripting Find and Replace Post 302564028 by kmanivan82 on Wednesday 12th of October 2011 03:43:36 PM
Old 10-12-2011
Find and Replace
i am having a file test1.txt and its contents is as follows.
<abcaaa bbb ccc ddd>
<dddeeeffff>
<my computer>
<abcmydocuments>

Now I need to find the text abc and should be replaced as follows.
<abc>
<dddeeeffff>
<my computer>
<abc>

First line has the text "abc" and it has to be replaced with abc removing all others characters.
Second line does not have the pattern abc and so it will not be disburbed and so as the third line.
The fourth line has the text "abc" and should be replaced by abc alone ignoring all other characters.

can anyone help me out how to perform this in unix shell script.

Thanks in advance.

Krishnakanth Manivannan
Software Engineer
 

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LEARN ABOUT DEBIAN

feed::find

Feed::Find(3pm) 					User Contributed Perl Documentation					   Feed::Find(3pm)

NAME

       Feed::Find - Syndication feed auto-discovery

SYNOPSIS

	   use Feed::Find;
	   my @feeds = Feed::Find->find('http://example.com/');

DESCRIPTION

       Feed::Find implements feed auto-discovery for finding syndication feeds, given a URI. It (currently) passes all of the auto-discovery tests
       at http://diveintomark.org/tests/client/autodiscovery/.

       Feed::Find will discover the following feed formats:

       o   RSS 0.91

       o   RSS 1.0

       o   RSS 2.0

       o   Atom

USAGE

   Feed::Find->find($uri)
       Given a URI $uri, use a variety of techniques to find the feeds associated with that page. If $uri itself points to a feed (i.e., if the
       Content-Type of the response is a recognized feed type), returns $uri.

       Returns a list of feed URIs.

       The following techniques are used:

       1. <link> tag auto-discovery
	   If the page contains any <link> tags in the <head> section, these tags are examined for recognized feed content types. The following
	   content types are treated as feeds: application/x.atom+xml, application/atom+xml, application/xml, text/xml, application/rss+xml, and
	   application/rdf+xml.

       2. Scanning <a> tags
	   If the page does not contain any known <link> tags, the page is then scanned for <a> tags for links to URIs with certain file
	   extensions. The following extensions are treated as feeds: .rss, .xml, and .rdf.

	   Note that this technique is employed only if the first technique returns no results.

   Feed::Find->find_in_html($html [, $base_uri ])
       Given a reference to a string $html containing an HTML page, uses the same techniques as described above in find to find the feeds
       associated with that page.

       If you know the URI of the page, you should provide it in $base_uri, so that relative links can be properly made absolute. Feed::Find will
       attempt to determine the correct base URI, but unless that URI is specified in the HTML itself (in a "<meta>" tag), you'll need to supply
       it yourself.

       Returns a list of feed URIs.

LICENSE

       Feed::Find is free software; you may redistribute it and/or modify it under the same terms as Perl itself.

AUTHOR &; COPYRIGHT
       Except where otherwise noted, Feed::Find is Copyright 2004 Benjamin Trott, ben+cpan@stupidfool.org. All rights reserved.

perl v5.10.1							    2011-01-28							   Feed::Find(3pm)
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