thunar -V (return code: 1)
Thunar: Cannot open display:
thunar --help (return code: 0)
Usage:
thunar [OPTION?] [FILES...]
Help Options:
-h, --help Show help options
--help-all Show all help options
--help-gtk Show GTK+ Options
Application Options:
-B, --bulk-rename Open the bulk rename dialog
--daemon Run in daemon mode
-q, --quit Quit a running Thunar instance
-V, --version Print version information and exit
--display=DISPLAY X display to use