The Linux Command Line, 2nd Edition: A Complete Introduction

Linux Bible: Edition 10

Wicked Cool Shell Scripts, 2nd Edition: 101 Scripts for Linux, OS X, and UNIX Systems

Linux Basics for Hackers: Getting Started with Networking, Scripting, and Security in Kali

The Linux Programming Interface: A Linux and UNIX System Programming Handbook

Linux Kernel Development: Edition 3

Understanding the Linux Kernel: From I/O Ports to Process Management, Edition 3

Linux System Programming: Talking Directly to the Kernel and C Library, Edition 2

Penetration Testing with Raspberry Pi

Beginning Linux Programming

The Design and Implementation of the FreeBSD Operating System: Edition 2

vi Editor Pocket Reference

Easy Linux Device Driver, Second Edition: First Step Towards Device Driver Programming

Linux in a Nutshell: A Desktop Quick Reference, Edition 6

Learning the bash Shell: Unix Shell Programming, Edition 3

The Practice of System and Network Administration: DevOps and other Best Practices for Enterprise IT, Volume 1, Volume 1, Edition 3

DevOps Troubleshooting: Linux Server Best Practices

Advanced Programming in the UNIX Environment: Edition 3