I am using Ubuntu 18.04, and I am looking for a way to add files programmatically to deja-dup's inclusion and exclusion lists. I don't mind if this has to be done indirectly, i.e. if it's not supported by the deja-dup command line tool itself.
I suppose a good start would be to find out where these inclusion and exclusion lists are stored. FYI I am using version 43.4 via Snap