planner -V (return code: 1)
Cannot open display:
Run 'planner --help' to see a full list of available command line options.
planner --help (return code: 0)
Usage:
planner [OPTION?] - Planner project management
Help Options:
-h, --help Show help options
--help-all Show all help options
--help-gtk Show GTK+ Options
Application Options:
-g, --geometry=GEOMETRY Create the initial window with the given geometry.
--display=DISPLAY X display to use