35.5 Remove Mail/News Headers with behead

When you're saving or re-sending a news article or mail message ( 1.33 ) , you might want to the remove header lines ( Subject: , Received: , and so on). This little script will handle standard input, one or many files. It writes to standard output. Here are a few examples:

• With saved messages, at a shell prompt:

  % 
  
  behead 
  
  
  
  msg*
  
  
  
   | mail -s "Did you see these?" fredf
  
  

• To save an article, from a pipe, without a header, from a program (here, the old readnews ) that can't cut off headers itself:

  What now? [ynq] 
  
  s- | behead >
  
   
  
  filename
  
  

Here's the script, adapted a little from the original by Arthur David Olson:

#! /bin/sh
case $# in
0)  exec sed '1,/^$/d' ;;
*)  for i
    do sed '1,/^$/d' "$i"
    done
    ;;
esac

The script relies on the fact that mail messages use a blank line to separate the header from the body of the message. As a result, the script simply deletes the text from the beginning up to the first blank line.