These are the formal rules for forming basic UNIX regular expressions. For some simple examples, skip to Simple Examples. The rules come from the Solaris 7 regexp(5) manual page. The I2A2 reflector ...

The reflector DBM can be asked to search for a common name by means of a Basic UNIX regular expression applied to all common names known to the DBM. A regular expression search is useful when part of ...

Regex patterns help search text strings efficiently ... In some cases, you can get away with just knowing how to use a few symbols and basic patterns. I'll keep this guide as simple as possible ...