Testimonials 😍

I love your books on regex...As a student from the Digital VLSI space, it is indeed useful now and definitely in the future. It's really well written and really easy to understand the examples.

feedback on reddit

It's very thorough, written with care, and presented in a way that makes sense. Even as an intermediate Python programmer, I found use in this book. — feedback by Andrew Healey on an early draft of "100 Page Python Intro" mentioned in this Hacker News thread

Step up your cli fu with this fabulous intro & deep dive into awk. I learned a ton of tricks!

feedback on twitter

Your Practice Python Projects book is really helping me to reinforce my knowledge and mastery of Python as I'm learning.

feedback on twitter

Books

Here's my list of self-published ebooks. You can get the pdf/epub versions as a bundle or as individual books. You can also read them online.

Bundles 📚


100 Page Python Intro

Short, introductory guide for the Python programming language, suited for those already familiar with programming basics.

100 Page Python Intro book cover image

Cover art: Ilsa Olson


Python re(gex)?

Learn Python Regular Expressions step by step from beginner to advanced levels with 200+ examples. Both re and regex modules are covered. Exercises are also included to test your understanding.

Python re(gex)? cover image


Practice Python Projects

Know Python basics but don't know what to do next? Take the next step in your programming journey with real world inspired Python projects.

Practice Python Projects cover image


JavaScript RegExp

Learn JavaScript Regular Expressions step by step from beginner to advanced levels with 200+ examples. Exercises are also included to test your understanding.

JavaScript cover image


GNU grep and ripgrep

Example based guide to mastering GNU grep and ripgrep. Exercises are also included to test your understanding.

grep cover image


GNU sed

Example based guide to mastering GNU sed. Exercises are also included to test your understanding.

sed cover image


GNU awk

Example based guide to mastering GNU awk one-liners.

awk cover image


Ruby Regexp

Learn Ruby Regexp step by step from beginner to advanced levels with 200+ examples. Exercises are also included to test your understanding.

Ruby Regexp cover image


Ruby one-liners cookbook

Example based guide for text processing with Ruby from the command line. Exercises are also included to test your understanding.

Ruby one-liners cookbook cover image


Perl one-liners cookbook

Example based guide for text processing with Perl from the command line. Exercises are also included to test your understanding.

Perl one-liners cookbook cover image


Command line text processing with GNU Coreutils

You might be already aware of popular coreutils commands like head, tail, tr, sort, etc. This book will teach you more than twenty of such specialized text processing tools provided by the GNU coreutils package.

Command line text processing with GNU Coreutils cover image