Note that metacharacters (with one exception) are not active inside classes. For example will match any character except n this is called a negated character class. Inside a class, at the beginning, the ^ means exception from the search. Matches for anything inside the square brackets. Net.rix will match both and Character class The following table describes how each of these metacharacters functions. The following single characters are not interpreted as literals but instead have special meanings: Note that regular expressions are case sensitive, so www will not match WWW or wWw. LiteralsĪny single character, except for those reserved as metacharacters, is already a regular expression itself.
Regex ComponentsĪ RegEx can include literals and metacharacters. For example, you can define a RegEx that will match email addresses, PII, PHI or credit card numbers. Using this little language, you specify rules that define the strings you want to match. Regular expressions are a small but highly specialized programming language they are basically wildcards on steroids. Data Classification for Compliance: Looking at the Nuances.Data Classification: What It Is, Why You Should Care and How to Perform It
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