kdir</code>, the argument is
          the name of the directory we want to create.</p>

        <blockquote>
          <p>Some commands always require arguments to work, like <code>mkdir</code>. Other
            commands can work just fine without supplying any arguments, like
            <code>ls</code>.
          </p>
        </blockquote>

        <p>Now that we've made our <code>example</code> directory, let's make sure it is
          actually there. Use the <code>ls</code> command to verify that <co