title: Understanding linux DISPLAY variable
body: <p>I am new to Linux and I had to set DISPLAY variable for running a java application. Somehow I managed to do that, and I understand that display can be set using</p>
  
  <pre><code>&lt;host&gt;:&lt;display&gt;[.&lt;screen&gt;]
  </code></pre>
  
  <p>but what I am doing is :1001.</p>
  
  <p>Now, this 1001 is 1001th display of this linux? Are this many display possible in a machine or my understanding is wrong?</p>