title: how to manage file dependencies in a website
body: <p>I am working on a website and gradually it become big. 
  I am searching a tool or a method to know file dependencies.</p>
  
  <p>for e.g.</p>
  
  <p>I am using images/js/css files all over in website and before making any change or delete a file I want to know how many files (html,aspx) using that image/js/css file </p>
  
  <p>thanks in advance :)</p>