A directory, for the rest of you people, is a group of files or a work area. (Windows and Macintosh users may recognize it as a folder.) You give a directory a name, such as Budget or Letters or Games or Harold. You can put as many files in a directory as you want.The good thing about directories (also sometimes called subdirectories, for no good reason) is that you can use them to keep together groups of related files. If you make a directory for all your budget files, those files are the only ones you see while you are working in that directory. Directories make concentrating on what you are doing easy so that you’re not distracted by the zillions of other files on the hard drive.You can make directories, move files into them, rename directories, and get rid of them. This chapter describes the commands that perform each of these stunts.