</pre></div>
<p>For more information about regular expressions, have a look at the
- perl regular expression manpage ("<a href="http://www.perldoc.com/perlre.html">perldoc
+ perl regular expression manpage ("<a href="http://perldoc.perl.org/perlre.html">perldoc
perlre</a>"). If you are interested in more detailed
information about regular expressions and their variants
(POSIX regex etc.) the following book is dedicated to this topic:</p>
Regular Expression</a> vocabulary. In this document, we do not attempt
to provide a detailed reference to regular expressions. For that, we
recommend the <a href="http://pcre.org/pcre.txt">PCRE man pages</a>, the
-<a href="http://www.perldoc.com/perl5.8.0/pod/perlre.html">Perl regular
+<a href="http://perldoc.perl.org/perlre.html">Perl regular
expression man page</a>, and <a href="http://www.oreilly.com/catalog/regex2/index.html">Mastering
Regular Expressions, by Jeffrey Friedl</a>.</p>