Joseph L. Casale wrote: >> sounds more like a reason to use sed >> >> man sed or tell us exactly what you are trying to do > > Tell you the truth, I would much rather use sed, but I didn't think > that was doable with it. > > I have a slew of txt files that contain a keyword like "service-one" > on many lines. I need to change those, but only the ones that appear > _after_ a known comment. Can you use a regexp like: s/\(known_part\)\(.*\)\(change_part\)/\1\2replace_part/ -- Les Mikesell lesmikesell at gmail.com