GNU BRE/ERE cheatsheet and differences between grep, sed and awk

This blog post covers Basic Regular Expressions (BRE) and Extended Regular Expressions (ERE) syntax supported by GNU grep, sed and awk. You'll also learn the differences between these tools — for example, awk doesn't support backreferences within regexp definition (i.e. the search portion).

100 Page Python Intro book announcement


I just published my ebook titled "100 Page Python Intro". This book is a short, introductory guide for the Python programming language. This book is well suited:

  • As a reference material for Python beginner workshops
  • If you have prior experience with another programming language
  • If you want a complement resource after reading a Python basics book, watching a video course, etc