title: Mac Terminal change PDF author
body: <p>I need to change the author of a PDF file on my Mac. I have tried to use grep and sed to accomplish this, but haven't succeeded.</p>
  
  <p>If I open a PDF file in Preview.app and go to Tools > Show Inspector I see "Author: yonatan".</p>
  
  <p>Is it possible to use Terminal.app to change this string?</p>
  
  <p>Thanks</p>
  
  <p>P.S. I know I can create a new User Account on my Mac or use Adobe Acrobat Professional.</p>