Roll Your Own Dropbox Clone with a Raspberry Pi and BitTorrent Sync Lifehacker The Raspberry Pi serves as the central server and the other devices connect to it for file updates whenever they connect to the network. Check out the full instructions on Jack's blog, including a script to start btsync whenever the Raspberry Pi starts up.

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Roll Your Own Dropbox Clone with a Raspberry Pi and BitTorrent Sync – Lifehacker