> is gone.</p>

        <blockquote>
          <p><strong>Warning</strong>: Unlike on Windows and MacOS, there is no friendly
            Recycle Bin or Trash from which you can restore deleted files. In
            UNIX, when you <code>rm</code> a file, it's gone. You can't "undo" <code>rm</code>, so
            think twice (and thrice!) before using the <code>rm</code> command!.</p>
        </blockquote>


        <h3 id="summary-of-files">Summary of files</h3>


        <p>In this section, we learned the