title: How to get CPU usage and RAM usage without exec?
body: <p>How does VBulletin get the system information without the use of <code>exec</code>? Is there any other information I can get about the server without exec? I am interested in:</p>
  
  <ul>
  <li>bandwidth used</li>
  <li>system type</li>
  <li>CPU speed/usage/count</li>
  <li>RAM usage</li>
  </ul>