title: Determine Redhat Linux Version
body: <p>How do I determine which <code>RedHat</code> Linux version I am running?</p>
  
  <p>Here's what I've read:</p>
  
  <ul>
  <li><code>/etc/redhat-release</code> file contains the version, but anybody can tamper with that file.</li>
  <li>people say <code>uname</code> command, but you can install any kernel on Redhat.</li>
  </ul>
  
  <p>If I am running redhat 5.1 and someone upgrade it with 5.2 or 5.x, what determines the version of RedHat?</p>
  
  <p>even <code>lsb_release -a</code>  read /etc/redhat-release file. </p>