title: Firefox: find location of specific add-on/extension?
body: <p>I'm using Firefox 5, and I already know that extensions are situated in the <code>extensions</code> subfolder of the <a href="http://kb.mozillazine.org/Profile_folder_-_Firefox" rel="nofollow noreferrer">Profile folder</a>... However, I need to find where is a particular extension (say, <a href="https://addons.mozilla.org/en-US/firefox/addon/colt/" rel="nofollow noreferrer">CoLT</a>) located; the problem is that most of the extension folders are named by guid, e.g.</p>
  
  <pre><code>extensions$ ls
  {232ac1d3-4d70-4919-8338-48c3d3f98afc}
  {29c4afe1-db19-4298-8785-fcc94d1d6c1d}
  {2bfc8624-5b8a-4060-b86a-e78ccbc38509}
  {33f141c0-3703-4a4c-b459-cec618a7dafd}
  ...
  </code></pre>
  
  <p>Then again: "<em>Starting in Gecko 2.0 (Firefox 4 / Thunderbird 3.3 / SeaMonkey 2.1) , XPI files are no longer unpacked when extensions are installed. Instead, the XPI itself is placed in the extensions directory, and files are loaded directly out of the package.</em>" (<a href="https://developer.mozilla.org/en/extension_packaging" rel="nofollow noreferrer">Extension Packaging - MDN Docs</a>)... </p>
  
  <p>And since XPI is basically a ZIP archive, grepping through the <code>extensions</code> folder looking for, say, the extension name: </p>
  
  <pre><code>extensions$ grep -ri 'colt' . 
  </code></pre>
  
  <p>... will return nothing. </p>
  
  <p>So, does anyone know of a method (or an extension) to tell me exactly which XPI (or unpacked folder) is a particular extension located in/loaded from?</p>