Troubleshoot recipe to prevent repeating footer

    
    I plucked this recipe from the FAQ's for rc.local.s20. It 
    isn't working at all - no footers are getting inserted.
    Any clues what may be wrong?

    Can you also explain how much of the footer.txt files this 
   'pulls in' to compare against the message?
    
    Jo
    
    
        
    #
    # Add text below each message - this one prevents duplication
    #

    TEXT=`sed -n '2 p' <footer.txt`
    :0 fbBw
    * $ ! $\TEXT
    | cat - footer.txt