Regexp hacks
tips and tricks for learning, building and using regular expressions
IBM developerWorks tutorials and articles
“Know your regular expressions”
“Hone your regexp pattern-building skills” is a hands-on tutorial taking you through the classic UNIX and Linux command-line tools.
Other tutorials and articles
You can pre-order the Regular Expressions Cookbook to get it the day it’s released (2009). Mastering Regular Expressions
is currently available.
“Pattern Matching and Regular Expressions”
“Regular Expressions explained”
“Finding Text in Context”: an article about grep’s context output.
Regexp examples and one-liners
Examples from regular-expressions.info
regexlib.com, a searchable library of thousands of regular expressions
list of regexps for matching numbers
For further reference
If it lives up to its name, the Regular Expressions Cookbook is bound to be a classic.
Need more? The dmoz listing for regexps is long.