title: I need a binary comparison tool for Win/Linux
body: <p>First of all, I don't need a textual comparison so Beyond Compare doesn't do what I need.</p>
  
  <p>I'm looking for a util that can report on the differences between two files, at the byte level.  Bare minimum is the need to see the percentage change in the file, or a report on affected bytes/sectors.  </p>
  
  <p>Is there anything available to save me the trouble of doing this myself?</p>