[plug] sed or awk

[Leon Brooks]

Rob Dunne wrote:

>          can anyone tell me how to replace repeated occurances of
> that same pattern with a different replacement pattern?

> ie 
> the first  "1" is replaced with "1"
> the second "1" is replaced with "2"
> the third  "1" is replaced with "3"

I could be unimaginitive and tell you to just do multiple passes:

sed <source.txt -e 's/111/123/g' -e 's/11/12/g' >modified.txt

-- 
Remember, a closed mouth gathers no foot. -- Steve Post