recursively find/replace text in files

[Daniel Eugenin M.]

> hi..
>
> can't find my old solution to this!! need to know how to find/replace
> 'text'
> in files in a directory tree. i'd like to be able to either do all files,
> or
> all files of a specific extension
>
>  replace "foo" with "bar" in all files in the dir tree
>  replace "foo" with "bar" in all (*.cpp) files in the dir tree

something like:

find . -type f -name "*.cpp" -exec sed -i 's/foo/bar/g' {} \;

--
Daniel Eugenin M.