 This is a fast way
          to verify that a file is correct or to read what a file contains. For example,
          if you forget any UNIX commands in in this article, you can quickly <code>cat
unix.txt</code> to read about them.
        </p>


        <h3 id="renaming-files">Renaming files</h3>


        <p>To rename files on Windows or MacOS, you would click on the name of the
          file and type in the new name.</p>

        <p>Renaming files with the terminal can be a little confusing at first.
 