The previous pages show you how to navigate your directories using Unix commands. Just perusing your directories isn't particularly productive, however. This section shows you how to do something with the files you see listed—copy, move, create, and delete directories and files.
You're entering Serious Power territory, where it's theoretically possible to delete a whole directory with a single typo. As a precaution, consider working through this section with administrator privileges turned off for your account (Section 12.1.2), so that you won't be able to change anything outside your home directory—or to be really safe, create a new, test account just for this exercise so even your personal files won't be at risk.
Using the Unix command cp, you can copy and rename a file in one move. (Try that in the Finder!)
The basic command goes like this: cp path1 path2, where the path placeholders represent the original file and the copy, respectively.