The simple commands you have tried so far are all of the safe-and-sane, fire marshal–approved variety; they merely print information to your Terminal. Now you are going to try to get some real tangible results from the commands you use. These commands are also essentially safe and sane if you follow my instructions.
You have already learned how to create folders by means of menus and your mouse, but you can also do this using the command line. The command is
mkdir (make directory), and it is easy as pie to use (though I've never been quite sure how pie is easy).
To see how this command works and to work with the commands that follow, use the
mkdir command now to create a folder called command_exp (for command experiments). ...