title: send SHIFT+H keystroke to screen
body: <p>I have a running process that I've started with screen.
  I want to enable log file "on the fly" sending CTRL+a SHIFT+H from a script:</p>
  
  <pre><code>screen -dr process -X stuff ^A H , screen says --&gt; -X: stuff: invalid option
  screen -dr miner -X stuff "^A H" , screen says nothing but log file is not enabled
  </code></pre>
  
  <p>Using -p 0 does not make any difference.
  Basically what I need is to send SHIFT+H as it seems that for screen it's not the same to send "H" than SHIFT+H</p>