This chapter introduces the basic commands you’ll find yourself using several times every day. Think of these as the hammer, screwdriver, and pliers that a carpenter keeps in the top of his toolbox. After you learn these commands, you can start controlling your shell and finding out all sorts of interesting things about your files, folders, data, and environment.
ls command is probably the one that people find themselves using the most. After all, before you can manipulate and use files in a directory, you first have to know what files are available. That’s where
ls comes in, as it lists the files and subdirectories found in a directory.
ls command might sound simple—just show me the files!—but ...