The Linux Command Line, 2nd Edition: A Complete Introduction
How Linux Works, 2nd Edition: What Every Superuser Should Know
Linux Basics for Hackers: Getting Started with Networking, Scripting, and Security in Kali
Bash Pocket Reference: Help for Power Users and Sys Admins
Linux Command Line and Shell Scripting Bible, 3rd Edition
PowerShell for Sysadmins: Workflow Automation Made Easy
The Linux Command Line: A Complete Introduction
Learning the bash Shell: Unix Shell Programming (In A Nutshell (O'reilly))
Linux Pocket Guide: Essential Commands
Serious Python: Black-Belt Advice on Deployment, Scalability, Testing, and More