Move Around in File Directories

Normally when you want to look at files on your computer’s hard drive, you use graphical programs like Explorer on Windows or the Finder on Mac. Either way, the idea is to show you the files, folders/directories, and applications/programs on the computer so you can navigate around and run things.

We’re doing the same thing here, but in a more powerful way and without graphics. If you’re already familiar with doing this, please feel free to skip to the end of this chapter for a small treat. Otherwise, read on.

The collection of files and folders on your computer is called the file system. At any point in time a Finder (or Explorer) window on your Desktop or in your command shell is sitting in some current directory. ...

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