Profile PictureSundeep Agarwal

I help programmers learn tricky topics like Regular Expressions and CLI tools with understandable examples.

Follow me on Twitter ( for interesting tech nuggets and updates on what I am creating.


GNU grep/sed/awk ebooks updated, Interactive apps, free/discount offers and more

Python Regex ebook updated, Interactive apps, free/discount offers and more

learnbyexample weekly: sample issue

Interactive exercises (Python regex, Linux text processing), Curated resources, Year end sale and more

Festive deals for books on Python, Linux, JavaScript, Regular Expressions and more

Announcing Computing from the Command Line, free/discount offers and more

CLI basics book update, Video demos, Bundle discounts and more

Announcing Vim Reference Guide, free/discount offers and more

Improve your Python regex skills with 75 interactive exercises

Announcing learnbyexample weekly: free newsletter for programming resources and more, delivered every Friday

Announcing CLI text processing with Coreutils ebook (free for a week), free Python bundle and a giveaway contest

Announcing Practice Python Projects ebook, free for a week

Updated my books recently, use your account to get latest versions