They&#x27;re nervous about this part:<p><pre><code>  # Restart sshd in the new root.
  cp &#x2F;mnt&#x2F;etc&#x2F;ssh&#x2F;* &#x2F;etc&#x2F;ssh
  killall -HUP sshd
  # You&#x27;ll have to reconnect at this point. Let&#x27;s hope it works.
</code></pre>
Use a dead man&#x27;s switch: set an &#x27;at&#x27; job to undo everything in 10 minutes. If you screw up and get disconnected, the at job runs.