DNS and BIND (Nutshell Handbooks)

The Ultimate Arch Linux Bible: Installation, Configuration, and Package Management (the most complete set guide for linux Mastering Arch Linux: The ... to Building and Maintaining a Linux System)

Unix System Administration Handbook

Ubuntu Server Administration (Network Professional's Library)

termcap & terminfo (O'Reilly Nutshell)

UNIX Command Line Mastery: A Practical Beginner’s Guide to Shell Scripting, System Administration, and Real-World Projects

Introduction to the Command Line (Third Edition): A Fat-Free Guide to Linux, Unix, and BSD Commands (Fat-Free Technology Guides)

Arch Linux Mastery: A Complete Guide to Installation, System Customization, and Maintaining a Rolling Release System

Linux Mastery Bible: A Complete Guide to Modern Systems, Automation, and Cloud-Native Operations

LEARN UNIX SYSADMIN COMMAND: Step-by-Step Instructions for System Administrators and Beginners