Tux the penguin reading a textbook

An open-access textbook on Linux: its history, architecture, and use. From the kernel and shell to scripting, networking, and modern containerised systems. For developers, system administrators, scientists, and anyone who wants to understand how the operating system that runs the internet works.

Table of Contents

Foundations

The Command Line

System Administration

Programming and Tools

Modern Linux

Textbook of Linux — Learn Linux on iPhone — Download on the App Store