pavucontrol -V (return code: 1)
Usage:
pavucontrol [OPTION…]
PulseAudio Volume Control
Help Options:
-h, --help Show help options
--help-all Show all help options
--help-gtk Show GTK+ Options
Application Options:
-t, --tab Select a specific tab on load.
-r, --retry Retry forever if pa quits (every 5 seconds).
-m, --maximize Maximize the window.
--display=DISPLAY X display to use
pavucontrol --help (return code: 0)
Usage:
pavucontrol [OPTION?]
PulseAudio Volume Control
Help Options:
-h, --help Show help options
--help-all Show all help options
--help-gtk Show GTK+ Options
Application Options:
-t, --tab Select a specific tab on load.
-r, --retry Retry forever if pa quits (every 5 seconds).
-m, --maximize Maximize the window.
--display=DISPLAY X display to use