gdm-screenshot -V (return code: 1)
Failed to connect to Mir: Failed to connect to server socket: No such file or directory
Unable to init server: Could not connect: Connection refused
** (gdm-screenshot:14629): WARNING **: Cannot open display:
gdm-screenshot --help (return code: 0)
Usage:
gdm-screenshot [OPTION...] Take a picture of the screen
Help Options:
-h, --help Show help options
--help-all Show all help options
--help-gtk Show GTK+ Options
Application Options:
-d, --debug Debugging output
--display=DISPLAY X display to use