title: Automatic rearrange two pdf files from a document "rectoverso"
body: <p>I have scanned a recto/verso file but my scanner is only recto so i have two pdf files.
  The first one contains the pages 1-3-5-7-9 and the second one the pages 10-8-6-4-2 (in this order)</p>
  
  <p>I would like to rearrange them in one pdf file with the pages in the good order.
  But of course my real file contains more than 10 pages so it is a duty to do this.</p>
  
  <p>Have you got an idea how to rearrange the both files in one correctly and automatically?</p>
  
  <p>I thought a bash file with a command line software.
  But which one (must be compatible on Windows 7)?</p>
  
  <p>Thank you </p>