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About regular expressions

About regular expressions - Perl Tutorial

From the course: Perl 5 Essential Training

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About regular expressions

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- [Voiceover] Regular expressions is a pattern-matching language used in searching and replacing strings of text. Regular expressions became popular in the early days of UNIX, and they're used extensively in common UNIX utilities, like "sed" and "awk". Regular expressions are commonly referred to as "Regex" or "Regexp". Personally, I find "Regex" easier to pronounce without the p at the end. Perl uses regular expressions extensively, so it's a good idea to understand them well. At first they may look a little intimidating, but they're surprisingly simple once you get a few basic concepts. This chapter is an introduction to regular expressions, and it's not meant to be exhaustive. It can be useful to gain a thorough understanding of the subject, but in practice, a few simple techniques will be sufficient for most purposes. This chapter will give you the foundation for using basic regular expressions in Perl. For further study, I recommend Jeffrey Friedl's excellent book, "Mastering…

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