GREP

Lesson in the Linux Roadmap · Stage 4: Working with Files

Last updated 14 September 2026

What is GREP?

GREP (Global Regular Expression Print) is a powerful text search utility that finds and filters text matching specific patterns in files. It searches line by line and prints matching lines to the screen. Essential for shell scripts and command-line operations. Example: grep "pattern" fileName searches for specified patterns. Alternative: ripgrep offers enhanced performance and features.

Study this in the interactive course See the whole Linux roadmap

Free resources to learn GREP

Open sourceRipgrep: GitHub Repository
ArticleGrep and Regular Expressions for Beginners
ArticleLinux grep Command: Pattern Searching

GREP: common questions

Can I learn GREP in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain GREP in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this GREP tutorial for beginners?

It is lesson 36 of 102 in the free Linux roadmap, in stage 4, Working with Files. If you are new to Linux, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.