What is Linux for beginners and professionals with examples on files, directories, permission, backup, ls, man, pwd, cd, chmod, man, shell, pipes, filters, regex, vi etc..
Regular expressions are commonly known as a regex. These are nothing more than a pattern or a sequence of characters, which describe a special search pattern as a text string.
"Regular expressions can be scary...really scary. Fortunately, once you memorize what each symbol represents, the fear quickly subsides. If you fit the title of this article, there's much to learn! Let's get started. "