Regular Expressions are an essential part of programming, but they are hard to come to grips with, aren't they? Fortunately, we have the answer for you! Open Source Regular Expression Recipes provides you with all the open source regular expressions you'll ever need, and explains how to use each one. This way, you can learn by example, rather than muddling through endless pages of syntax explanation. Concise syntax references are included only when necessary. Languages covered include Perl, PHP, grep, vim, Python, and shell. Web and applications developers, and system administrators will find the examples both accurate and relevant. And this book acts as a useful reference to keep handy for those moments when an answer is needed fast.