Sundeep Agarwal
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Hello!

I recently self-published my third book, this one is about GNU GREP and RIPGREP.

grep cover image

Get the e-book using either of these sites:

Note Please use a valid e-mail and save the mail you receive, you’ll get free updates for future versions.

Code snippets, example files, sample chapters, etc are available on GitHub: https://github.com/learnbyexample/learn_gnugrep_ripgrep

This book covers features of GNU grep and ripgrep along with discussion on BRE/ERE/PCRE(2)/Rust regular expressions. Examples are used extensively, please follow along by typing them out. Exercises are also included to test your understanding.

Some of you might be familiar with my Command Line Text Processing repo. This book is based on the grep chapter - edited to add more descriptions, better examples, exercises, etc. Also, I took the plunge and checked out ripgrep while working on this book. I’d assumed it would be similar to gnu grep and I just need simple changes to present it in the book. Well, it turned out lot more work and I had to settle for not covering all the options and customizations. In hindsight, would’ve been better if I did a separate book. Speed wise, ripgrep is very impressive and has plenty of additional nice features. For example: the multiline -U and replace -r options of ripgrep are quite handy - you can use this instead of sed for some cases with added advantage of speed, -F option and better regex features.

Table of Contents

  • Preface
  • Introduction
  • Frequently used options
  • BRE/ERE Regular Expressions
  • Context matching
  • Recursive search
  • Miscellaneous options
  • Perl Compatible Regular Expressions
  • Gotchas and Tricks
  • ripgrep
  • Further Reading

Hope you find the book useful. I would be grateful for your feedback and suggestions (twitter, goodreads).

Happy learning :)