Regular expressions are statements formatted in a very specific way and that can stand for many different results. Also known as "regex" or "regexp," they are primarily us… See more

Before we show you with examples, we'd like to point something out. We're going to be using the bash shell and the grep command to show you how to apply regular expression… See more

Regexps are a really concise way of stating terms so that your computer can expand them into multiple options. Let's take a look at the following example: The square brackets -- … See more

Often, we search based on boundaries. Sometimes we only want strings that appear at the beginning of a word, at the end of a word, or at the end of a line of code. This i… See more

We've only hit the tip of the iceberg here. You can also search for money terms delineated by the currency marker, and search for any of three or more matching terms. Thin… See more