I'm trying to work out how to use something like grep or sed or awk (or maybe even some Perl) to extract a string of characters which appears in a predictable place in a series of text files. Help/advice/tutorials very welcome! [more inside]
posted by infinitejones on Mar 15, 2013 - 8 answers

I have a brain-block when it comes to Regex and really need to learn it. Can anybody suggest really good tutorials with little exercises to reinforce the info? I've tried so many times to get a grasp and it just escapes me and would be invaluable for school/work since I'm doing a lot of string processing in Perl and PHP. Thanks!
posted by Raichle on Apr 8, 2011 - 11 answers

Regular Expressions / PHP preg_replace problem. Can this be made to work...? [more inside]
posted by twine42 on Oct 30, 2008 - 13 answers

Help me composite some regex. (That phrasing makes this question sound way less nerdy than it is) [more inside]
posted by ChasFile on Dec 28, 2007 - 13 answers

Perl regular expression question inside. Trying to parse a list of items... [more inside]
posted by pornucopia on Dec 21, 2005 - 8 answers