The mate volume applet
mate-volume-control [OPTIONS]
The MATE Volume Control Applet is used with Pulseaudio for adjusting audio levels from the notification area.
--version
Output version information and exit.
--debug
Enable debugging code
--display=DISPLAY
X display to use.
-?, -h, --help
Print standard command line options.
--help-all
Print all command line options.
--help-gtk
Print GTK+ options.
http://github.com/mate-desktop/mate-media/issues
Adam Erdman <[email protected]> (2014)