## Command-Line Interfaces

 1. If this is new to you, your head might be spinning from so many cryptic
    commands. For many tasks, you can use graphical programs. However, even if
    it might not look like it, the command line is one of the most efficient
    interfaces for working with files (and doing many other things besides).

 2. Unfortunately, you would have to learn many more complicated commands and
    master combining them using the shell. If you want to become a wizard, I
    would recommend trying to do that. Nonetheless, there are many good
    programmers who are not command line users. It is up to you.

 3. The one exception is when I ask you to show how to do something to your
    classmates. Then, you will have to use the terminal and command line
    exclusively. But I won't get mad at you if you have to think about the
    commands to use and it takes you a few tries to type them correctly.

 4. One last thing I wanted to mention is that you can probably appreciate
    that it is much easier to give instructions as a list of commands to type,
    than it is to tell another person over the internet how to do something in
    a point-and-click program. You simply copy down the commands (or use
    ‹script›) instead of taking many screenshots and drawing red circles and
    arrows telling the user what to click in what order.

Sorry for the detour. You can now continue to:

    $ cat files.sh