From https://alliance.seas.upenn.edu/~bcpierce/wiki/index.php?n=Main.UnisonFAQGeneral https://alliance.seas.upenn.edu/~bcpierce/wiki/index.php?n=M... "Rsync is

From https://alliance.seas.upenn.edu/~bcpierce/wiki/index.php?n=Main.UnisonFAQGeneral https://alliance.seas.upenn.edu/~bcpierce/wiki/index.php?n=M... "Rsync is a mirroring tool; Unison is a synchronizer. That is, rsync needs to be told "this replica contains the true versions of all the files; please make the other replica look exactly the same." Unison is capable of recognizing updates in both replicas and deciding which way they should be propagated."