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Full Discussion: Sed Tricks
Top Forums UNIX for Dummies Questions & Answers Sed Tricks Post 302363301 by zaxxon on Tuesday 20th of October 2009 02:51:42 AM
Old 10-20-2009
Code:
echo "old gold old" | sed 's/\<old\>/new/g'
new gold new

Inside < and > you can define a "word" in RegExp. Have to escape them with \ though.
 

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XML::LibXML::RegExp(3pm)				User Contributed Perl Documentation				  XML::LibXML::RegExp(3pm)

NAME
XML::LibXML::RegExp - XML::LibXML::RegExp - interface to libxml2 regular expressions SYNOPSIS
use XML::LibXML; my $compiled_re = XML::LibXML::RegExp->new('[0-9]{5}(-[0-9]{4})?'); if ($compiled_re->isDeterministic()) { ... } if ($compiled_re->matches($string)) { ... } $compiled_re = XML::LibXML::RegExp->new( $regexp_str ); $bool = $compiled_re->matches($string); $bool = $compiled_re->isDeterministic(); DESCRIPTION
This is a perl interface to libxml2's implementation of regular expressions, which are used e.g. for validation of XML Schema simple types (pattern facet). new() $compiled_re = XML::LibXML::RegExp->new( $regexp_str ); The constructor takes a string containing a regular expression and returns a compiled regexp object. matches($string) $bool = $compiled_re->matches($string); Given a string value, returns a true value if the value is matched by the compiled regular expression. isDeterministic() $bool = $compiled_re->isDeterministic(); Returns a true value if the regular expression is deterministic; returns false otherwise. (See the definition of determinism in the XML spec (http://www.w3.org/TR/REC-xml/#determinism <http://www.w3.org/TR/REC-xml/#determinism>)) AUTHORS
Matt Sergeant, Christian Glahn, Petr Pajas VERSION
2.0001 COPYRIGHT
2001-2007, AxKit.com Ltd. 2002-2006, Christian Glahn. 2006-2009, Petr Pajas. perl v5.14.2 2012-06-20 XML::LibXML::RegExp(3pm)
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