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12,842 PointsWhat is a regular expression with GREP?
Video reference: https://teamtreehouse.com/library/console-foundations/environment-and-redirection/find-and-grep
Jim mentions that grep uses regular expressions, but I'm not clear what that means. Can someone enlighten me? Thanks!
1 Answer
Steven Parker
229,644 Points
Regular expressions are a symbolic notation for representing string patterns.
The concept of regular expressions exist in many languages as well as utilities like grep. Here's a pretty extensive wikipedia page on it.
There's also plenty of information around regarding the specifics of the regular expression implementation for grep, such as this one: Grep and Regular Expressions.