mutter --version (return code: 0)
mutter 3.18.3
Copyright (C) 2001-2011 Havoc Pennington, Red Hat, Inc., and others
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
mutter --help (return code: 0)
Usage:
mutter [OPTION...]
Help Options:
-h, --help Show help options
Application Options:
--sm-disable Disable connection to session manager
-r, --replace Replace the running window manager
--sm-client-id=ID Specify session management ID
-d, --display=DISPLAY X Display to use
--sm-save-file=FILE Initialize session from savefile
--sync Make X calls synchronous
--wayland Run as a wayland compositor
--display-server Run as a full display server, rather than nested
--version Print version
--mutter-plugin=PLUGIN Mutter plugin to use