title: smtp header / body separator
body: <p>I need to separate the header and body of a smtp message in bash. I know that a newline is used to indicate the end of the header, but is it always <code>\n</code>, <code>\r</code> or  <code>\r\n</code>, or do different operating systems use different ones?</p>
  
  <p>How can I do this?</p>