Note: help and version output are generated by a naïve script which tries a few variants of
<command> --help, <command> -h etc. to find the command's help and version info.
Sometimes it gets lucky, sometimes it doesn't; if the output below looks wrong, it probably is.
gdmap -V (return code: 1)
(gdmap:13135): Gtk-WARNING **: cannot open display:
gdmap --help (return code: 0)
gdmap [OPTION?] - Graphical Disk Map
-h, --help Show help options
-f, --folder=dir Inspect folder