The `egrep` (Extended Global Regular Expression Print) command in Linux is a powerful text searching tool for advanced pattern matching using extended regular expressions (ERE). `egrep` is part of the `grep` family of commands which include `grep` and `fgrep`. `egrep` supports extended regular expressions unlike `grep` making it more versatile for complex pattern matching. This article explains how to use the `egrep` command in Linux to efficiently match patterns and perform file search tasks. R......