Mac OS X

Learning the bash Shell: Unix Shell Programming

Unix Power Tools

Objective-C Pocket Reference: A Guide to Language Fundamentals

Mac OS X Snow Leopard: The Missing Manual (Missing Manuals)

Reinstalling OS X Without Apple Credentials: Reinstalling OS X: A Comprehensive Handbook Guide for Single Mac Users Without Apple Credentials

Tweak Your Mac Terminal: Command Line macOS

macOS Support Essentials 10.15 - Apple Pro Training Series: Supporting and Troubleshooting macOS Catalina

AppleScript: The Definitive Guide: Scripting and Automating Your Mac