title: How to add text on pdf using PDFJam
body: <p>I am using PDF Jam for manipulating pdf. I need to add a text line at the bottom of generated file. I tried it but not able to made it.
  Can anybody guide me how to do it?</p>
  
  <p>I did in my php code as</p>
  
  <pre><code>$command = '-----------------';
  exec($command);
  </code></pre>