Many people ask what the point of briefcases on Windows is. Basically, it's a fast and easy way to sync documents between removable storage and your PC (that isn't cloud based).
I keep my school documents on both a flash drive and a directory on my PC at home, just in case. I frequently edit both, editing the flash drive's files at school when I can't access my home PC, and the ones at home when I'm too lazy to find my flash drive.
When I want to sync the files, I can just plug the drive in and click "Update Briefcase" and files will be deleted, created, or updated as I have changed them in either direction, into or out of the briefcase.
Is there a simple, easy to use equivalent I can use on Ubuntu?