Designed for everyone using Linux operating systems, this Linux quick guide covers all daily used Linux features and options, provides quick tips and solutions for common Linux security problems and other operations. A comprehensive yet portable Unix reference for every Linux user to harness the power of Linux features, functions and tools. Linux operating system architecture. Table of Linux distributions and popular shells deployed in Linux systems.

Linux file system structure and commonly used configuration files in Linux systems. Frequently used commands and tools for file and directory management. Security risks and Linux solutions in the categories of data protection, system update, user management, Internet threats and more. Frequently used commands and tools for user and group management, jobs and processes management, networking operations, system management and more. Designed by experts with decades of experience in Unix/Linux operating systems.