grep

grep is a command-line utility used for searching plain-text data sets for lines matching a regular expression. It outputs the lines that contain the specified pattern, making it a powerful tool for filtering and locating specific information within files or streams of data. Its name comes from the ed command g/re/p (globally search a regular expression and print).

Visit the following resources to learn more:

• @article@Mastering Grep command in Linux/Unix: A Beginner's Tutorial
• @article@Bash grep Command - Search Text Using Patterns
• @video@Linux Crash Course - The grep Command