UNIX and Linux System Administration Handbook

Linux Device Drivers: Where the Kernel Meets the Hardware

Kali Linux Hacking: A Complete Step by Step Guide to Learn the Fundamentals of Cyber Security, Hacking, and Penetration Testing. Includes Valuable Basic Networking Concepts.

Essential System Administration: Tools and Techniques for Linux and Unix Administration

RHCSA/RHCE Red Hat Linux Certification Study Guide, Seventh Edition (Exams EX200 & EX300) (RHCSA/RHCE Red Hat Enterprise Linux Certification Study Guide)

UNIX and Linux System Administration Handbook, 4th Edition

Practical Guide to Fedora and Red Hat Enterprise Linux, A

Mastering Unix Shell Scripting: Bash, Bourne, and Korn Shell Scripting for Programmers, System Administrators, and UNIX Gurus

Practical UNIX and Internet Security: Securing Solaris, Mac OS X, Linux & Free BSD

RHCSA/RHCE Red Hat Linux Certification Practice Exams with Virtual Machines (Exams EX200 & EX300)