Richard Blum

Mastering Linux System Administration

Mastering Linux System Administration

Linux For Dummies

Linux For Dummies

CompTIA Linux+ Study Guide

LPIC-1 Linux Professional Institute Certification Study Guide

LPI Linux Essentials Study Guide

C# Network Programming

Professional Assembly Language

Linux Essentials

LPIC-2: Linux Professional Institute Certification Study Guide. Exam 201 and Exam 202

CompTIA Linux+ Powered by Linux Professional Institute Study Guide. Exam LX0-103 and Exam LX0-104