Imagine you are looking for a name in a telephone directory, but you can't remember its exact spelling. You can spend ages searching through all the possible combinations, unless you have a tool that ...

I was involved in a recent discussion on the "best" way to remove a given parameter from a URL string. The conversation began with using string primitives to split and join the parameter, a method ...

Quick: If you shout "regular expressions" in a crowd of Linux users, what happens? Answer: Everyone will tell you the right way to use them, and every answer will be different. Regular expressions -- ...

If you’ve ever done any serious programming you’ll have run into something called regular expressions: … (abbreviated regex or regexp and sometimes called a rational expression) is a sequence of ...

Regular expressions come in handy for all varieties of text processing, but are often misunderstood--even by veteran developers. Here's a look at intermediate-level regular expressions and what they ...

A quick run down on how you can use regular expressions in your own programs to give you more power over searching and substituting text. Perl has long been an extremely popular choice for text ...

Whether you are parsing logs or validating input, using regular expressions is a great way to accomplish both of these things. The problem is: regular expressions can be hard and that will only grow ...

If you’ve programmed in Perl or any other language with built-in regular-expression capabilities, then you probably know how much easier regular expressions make text processing and pattern matching.

When working with regular expressions in a shell script the norm is to use grep or sed or some other external command/program. Since version 3 of bash (released in 2004) there is another option: ...

In the Star Wars universe, not everyone uses a lightsaber, and those who do wield them had to build them themselves. There’s something to be said about that strategy. Building a car or a radio is a ...