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So I turned my headless Raspberry_Pi in to a CL Dropbox client/file server using the Dropbox Python SDK. Had to learn a lot of Python in the process but I'm pleased with the result. Code and setup instructions are here: https://github.com/carl-codling/PiDrop
Everything can be controlled within the terminal using a text based UI
and also fro my phone
and it's simple to send files back n forth from my laptop. I created a little bash script to SCP them