title: SSH to jump host, to final host, then tmux
body: <p>In my ssh config, I have</p>
  
  <pre><code>Host jumpHostNick
       HostName jumphost.com
       User username
  
  Host finalHostNick
       User username
       ProxyCommand ssh jumpHostNick nc finalHostURL 22
  </code></pre>
  
  <p>I would like to supplement this by having it run <code>tmux attach -d</code> when it gets to the final host. Is that possible?</p>