Grep (short for Global Regular Expression Print) is a command-line utility used to search for specific patterns of text within files.
It scans through input data and prints the lines that match the given pattern, making it a powerful tool for text processing and analysis. Widely used in Unix and Linux systems, grep supports regular expressions, enabling flexible and advanced search capabilities.
Example
grep "error" logfile.txtfinds and prints all lines containing the word error in logfile.txt.