books by subject
Linux Distributions

Red Hat® Certified Technician & Engineer (RHCT and RHCE) Training Guide and Administrator's Reference

Learning PHP 5

Python in a Nutshell 2e (In a Nutshell (O'Reilly))

Practical Vim: Edit Text at the Speed of Thought

Red Hat Rhcsa/Rhce 7 Cert Guide

Linux Universe: Installation and Configuration

Linux - Unleashing the Workstation in Your PC

Comptia Linux+ Complete Study Guide Authorized Courseware, 2nd Edition (Lx0-101 and Lx0-102)

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

Using Linux the Easy Way

Hacking Exposed Linux

Practical Raspberry Pi

Linux Command Line and Shell Scripting Bible

Minimal Perl: For UNIX / Linux People

Linux Command Line and Shell Scripting Bible

Sams Teach Yourself Linux Programming in 24 Hours

Linux: Configuration and Installation

Hacking Exposed Linux

Red Hat Linux Networking and System Administration

Advanced Linux Programming

How Linux Works, 2nd Edition

Managing Projects with Make 2e (Nutshell S.)

Linux Internet Server Visual Black Book

Raspberry Pi Manual: A practical guide to the revolutionary small computer

Automating Unix and Linux Administration (The Expert's Voice)

Perl for System Administration

Linux in a Nutshell 5e

Running Linux

Linux Unleashed
