This document provides an overview of Unix commands for Mac OSX. It begins with a brief history of the Mac operating system and its Unix origins. It then covers various types of commands including file/folder management, system administration, networking, text editing/manipulation, and more. Specific commands like ls, cd, grep, find, ifconfig, and curl are described along with examples. Pipes, redirection, and different shells (bash, zsh, tcsh) are also outlined. The document concludes by mentioning additional topics that could be covered at higher levels, like scripting and developer commands.