TfsConfig purgelocalversions /collection: /days: Configures the purgelocalversions job for the given collection. All workspaces ...

TfsConfig purgelocalversions /collection: /days:

            Configures the purgelocalversions job for the given
            collection. All workspaces that haven't been used in
             will have their local versions purged.

TfsConfig purgelocalversions /collection: /execute

            Immediately queues the purgelocalversions job to run
            for this collection.

TfsConfig purgelocalversions /collection: /disable
 
            Disables the purgelocalversions job for this collection.