title: Open screen in terminal after user login
body: <p>When a user logins to my Debian server using e.g. Putty, I need to perform the following:</p>
  
  <ol>
  <li>It will automatically execute command <code>screen -r MyWindow</code>, and</li>
  <li>the user won't be able to leave the screen window, so I want the user to have disabled all commands.</li>
  </ol>
  
  <p>How can I do that?</p>