Grep Cheatsheet

Grep (Global Regular Expression Print) searches for patterns in files and displays matching lines. It's one of the most powerful text-processing tools in Unix/Linux systems, used for finding specific content in files or command output.

Pattern matching in grep allows you to search for specific text patterns in files. Grep supports different types of patterns, from simple literal strings to complex regular expressions, providing flexibility for various search needs.

Context control options allow you to display lines before, after, or around matched lines. This provides context for your search results, making it easier to understand the relevance of matches in their surrounding text.

Grep can search through multiple files, entire directories, and even perform recursive searches. This section covers how to effectively use grep across file hierarchies and control which files are included or excluded from searches.