Although the title seems the same, I have the opposite question to How can I keep photos on my computer in sync with photos on smugmug?
That person would like changes local folders to automatically appear in SmugMug. I'd like to do the opposite: make SmugMug be my primary, authoritative store (where I can upload to from the field or from phone apps or whatever), and have an automatic sync to my own system.
Is there an easy (or moderately easy; I can code if necessary) solution for this?
Particularly, I'd like to retain metadata like titles and keywords, not just the JPGs. And, I'm on Linux, so Lightroom-based solutions are uninteresting to me.