How to merge folders and subfolders?

Question

I have two folders (ORIGINAL A and ORIGINAL B), and both do have subfolders.

How do I merge these two folders (and subfolders) to DESTINATION C?

a) ORIGINAL A and ORIGINAL B do have the same subfolders. I want to copy every unique file of any subfolder into the "correct" subfolder of DESTINATION C

b) some subfolders are only in ORIGINAL A, but not in ORIGINAL B. I want any folder in DESTINATION C

Does anyone know a terminal command?

Answer 1

Try:

rsync -aP /ORIGINAL_A/* /DESTINATION_C/

This is like a copy of the folder A

rsync -aP /ORIGINAL_B/* /DESTINATION_C/

That should sync the folders A an B to another the new folder C.

You could sync the file from A to B directly but you don't will have data loss this way.