How do I compare two folders and their subfolders in Libre Writer?

Hi:
I have tried using the Writer’s Guide( https://wiki.documentfoundation.org/images/0/0d/WG54-WriterGuideLO.pdf#page=77), but it only shows how to compare two Document files. It would take me too much time to compare all the files in my folders using that method.

Can this help?

Thanks ebot.That is a large list. Really appreciate it.