Rich Shepard
wrote:
>    I'm probably mistaken, but my
> understanding is
that sed would be used within a file to make changes
> line-by-line,
while awk can be fed by the 'ls' command
You're correct about being
mistaken.  sed is "stream editor" 
The stream can be the
contents of a file, a bytestream spewing from a pipe,  the output of a command
or whatever.

-- 
     Michael Rasmussen
  
http://www.jamhome.us/
 Be Appropriate && Follow Your
Curiosity
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