grep (Unix)

Grep is a command-line tool used in Unix systems to search for specific text within files. Think of it as a highly efficient way to find all occurrences of a word, phrase, or pattern in documents or logs. When you run grep with your search term and specify the files, it quickly scans and highlights the matching lines, saving time compared to manual search. It's commonly used by developers and system administrators to locate information, debug issues, or filter data swiftly within large collections of text.