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Regular-Expressions.info - Regex Tutorial, Examples and Reference - Regexp Patterns
A regular expression (regex or regexp for short) is a special text string for describing a search pattern. You can think of regular expressions as wildcards on steroids. You are probably familiar with wildcard notations such as *.txt to find all text files in a file manager.Welcome to RegExLib.com , the Internet's first Regular Expression Library.
Regular Expression Library
All characters except the listed special characters match a single instance of themselves. { and } are literal characters, unless they're part of a valid regular expression token (e.g. the {n} quantifier).
Regular Expressions Reference - Basic Syntax
