This is a 300-page technical guide stemming from the notes I have been taking while studying and working with Linux. It is structured as a bundle of Linux quick reference sheets aka "cheat" sheets.
The guide lists more than 1200 Linux commands and contains useful information about standards and tools for Linux system administration, as well as a good amount of topics
from the certification exams LPIC-1 (Linux Professional Institute Certification level 1), LPIC-2 (Linux Professional Institute Certification level 2), RHCSA (Red Hat Certified System Administrator),
RHCE (Red Hat Certified Engineer), and CEH (Certified Ethical Hacker).
This is an independent publication and is not affiliated with LPI, Red Hat, EC-Council, or any other organization.
You are free to share any single sheet, or also the whole guide in its entirety, provided that you distribute it unmodified and not for profit.
Download the guide from here (this is a permalink that always points to the latest edition). A new edition is released once a year.
Latest edition: 11th ed., March 2023
1st ed., May 2013
2nd ed., September 2014
3rd ed., July 2015
4th ed., June 2016
5th ed., September 2017
6th ed., August 2018
7th ed., May 2019
8th ed., January 2020
9th ed., January 2021
10th ed., March 2022