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What’s the Difference Between Grep, Egrep, and Fgrep in Linux?

The grep utility is a renowned search tool on Unix-like systems that can be used to search for files or lines. It offers vast functionality and supports a number of options like searching using string pattern, reg-ex pattern, or Perl based reg-ex. Read on to learn the difference between grep, Egrep, and Fgrep in Linux.