for example I have:
test-folder
--a-folder
--a.file
--b-folder
--b.file
--c.file
I need to put "test-folder" as argument and I should get back:
(
root/test-folder/a-folder/a.file,
root/test-folder/b-folder/b.file,
root/test-folder/b-folder/c.file,
)