Hidden within the confines of the elegant Mac OS X, is a powerful Unix based terminal that allows you to fully utilize your system and its resources. This tutorial is aimed at helping you become familiar with some useful commands that will help you customize your OS, secure your system and entice you to dive deeper into the operating system. All that’s required is Mac OS X, and a little curiosity.
This tutorial will be broken up into four parts. The first part explained how to utilize and explore the terminal , This second part consisted of security related commands  or commands that can be used to secure your system. This third part will deal with the customization of your operating systems, and some useful commands you can use to impress your colleagues and friends. Lastly, this tutorial will explore some of the tools utilized to test your Mac and it’s performance. Just to reiterate, all that is required is Mac OS X and a little curiosity.
Part 3: Customize the OS
Our first command, Display Full File Path
will display the entire file path in the path window when you open a folder from the finder. For the typical user, documents, pictures and desktop will probably be all you access however the more you dive into your system the more you’ll find yourself asking “where am I”? This command answers that question.
defaults write com.apple.finder _FXShowPosixPathInTitle -bool YES
defaults write com.apple.finder _FXShowPosixPathInTitle -bool NO
This next command, Quit Finder, is truly a hack of the OS operating system. By default you don’t have the option to quit the Finder Menu, however with this command you’ll actually have the option to quit the Finder and save some resources on your system.
defaults write com.apple.finder QuitMenuItem 1
Defaults write com.apple.finder QuitMenuItem 0
In the final part of our series, we’ll look at configuring and testing your Mac.