title: sed replacing numbers in string
body: <p>I can replace text in a string but as soon as I try and put in numbers it fails to match. </p>
  
  <p><strong>NOTE</strong> that this <code>[0-9]\+\</code> is causing the problem.</p>
  
  <p>This works:</p>
  
  <pre><code>sed -i "" -e "s/mySite-.js/mySite$current_timestamp.js/" template.php
  </code></pre>
  
  <p>This doesn't:</p>
  
  <pre><code>sed -i "" -e "s/mySite-[0-9]\+\.js/mySite$current_timestamp.js/" template.php
  </code></pre>
  
  <p>I apologize for asking <a href="https://stackoverflow.com/questions/14967483/using-sed-to-replace-old-timestamp-with-current-one">this question earlier</a> but I've spent almost a full day on this stupid thing and I'm going crazy.</p>