title: Ansible: Reboot if no user logged in (ansible.builtin.reboot)
body: <p>We need to reboot a Linux server if nobody is logged in.</p>
  <p><code>ansible.builtin.reboot</code> doesn't seem to have an option to check for that.</p>
  <p>Does Ansible have a way of checking if there are users logged in (kind of a <code>who</code> command)?</p>