x-session-manager --help (return code: 0)
Usage:
gnome-session-binary [OPTION...] - the GNOME session manager
Help Options:
-h, --help Show help options
Application Options:
-a, --autostart=AUTOSTART_DIR Override standard autostart directories
--session=SESSION_NAME Session to use
--debug Enable debugging code
-f, --failsafe Do not load user-specified applications
--version Version of this application
--whale Show the fail whale dialog for testing
--disable-acceleration-check Disable hardware acceleration check