VBoxClient --version (return code: 0)
5.1.28_Ubuntur117968
VBoxClient --help (return code: 0)
Usage: VBoxClient --clipboard|--draganddrop|--display|--checkhostversion|--seamless|check3d [-d|--nodaemon]
Starts the VirtualBox X Window System guest services.
Options:
--clipboard starts the shared clipboard service
--draganddrop starts the drag and drop service
--display starts the display management service
--checkhostversion starts the host version notifier service
--check3d tests whether 3D pass-through is enabled
--seamless starts the seamless windows service
-d, --nodaemon continues running as a system service
-h, --help shows this help text
-V, --version shows version information