title: How to create a PATCH file for the binary difference output file
body: <p>I want to know how to create a PATCH for the difference file I got by comparing two binary files. 
  $cmp -l   > output file name </p>
  
  <p>I checked for text files 'diff" can be used to compare and generate a PATCH file 
  $ diff -u oldFile newFile > mods.diff  # -u tells diff to output unified diff format </p>
  
  <p>I want to apply the PATCH on the old binary image file to get my new binary image file. </p>