gnome-klotski --version (return code: 0)
gnome-klotski 3.18.2
gnome-klotski --help (return code: 0)
Usage:
gnome-klotski [OPTION...]
Help Options:
-h, --help Show help options
--help-all Show all help options
--help-gapplication Show GApplication options
--help-gtk Show GTK+ Options
Application Options:
-v, --version Print release version and exit
--display=DISPLAY X display to use