Let’s say you want to search for a social security number in a text file. The format for US social security numbers is 999-99-9999. The regular expression you would use to match this is shown in ...

If you work with text, you owe it to yourself to learn regular expressions, and Patterns can help you do that--as well as figure out exactly what your search patterns are capturing.

Regular expressions can be used for partner matching, text processing, data validation, and much more. Also: 5 Linux commands I use to keep my device running smoothly The one caveat to using ...