Unison is a file-synchronization tool for Unix and Windows. It allows two replicas of a collection of files and directories to be stored on different hosts (or different disks on the same host), modified separately, and then brought up to date by propagating the changes in each replica to the other. Unlike simple mirroring or backup utilities, Unison can deal with updates to both replicas of a distributed directory structure. Updates that do not conflict are propagated automatically. Conflicting updates are detected and displayed. Unison allows you to either build a text only binary or a binary that will use a graphical user interface. To build the gtk2 graphical inteface binary, which is the default option, do this: "FLAVOR=gtk2 ./unison.SlackBuild" or just "./unison.SlackBuild" To build a textonly binary, do this: "FLAVOR=text ./unison.SlackBuild"