title: Extract 2nd page of each document and merge into a single document with Ghostscript
body: <p>I have a set of pdf files from which I would like to:</p>
  
  <ul>
  <li>extract the 2nd page of each</li>
  <li>merge all the 2nd pages into a single document</li>
  </ul>
  
  <p>I know how to do each of these independently with Ghostscript (generating a bunch of temporary 1-page PDF files on the way), but is there any way to do it in one command?</p>