I have two stinkin' files that I need to share among my devices. I need any of the devices to be able to access and change these files and have the changes stick. This is the functionality I get with dropbox - but dropbox only allows 3 devices access. Actually, I have a fourth, a Windows partition on this device, but that blows the dropbox limit. Fortunately I don't use it that much. This device I am on now is the only one running linux, the only one for which there is not a Google Drive Desktop app. I plan on soon acquiring another device, probably linux so I want to stay ahead of the game. This problem was mentioned in that old tutorial.