Comment 18 for bug 374274

+1 on rsync method and on the importance of this feature request.

Fine-grained control over what files should or shouldn't be backed up is a crucial feature if you want advanced users to take this software seriously. I love Deja Dup and the simplicity of it's UI, reliability etc. but I live in fear of an ISO (or other large/unnecessary file) getting sucked into my backup-set - which would promptly clog my intertubes and online strorage space and frankly be a PITA.