dbus-monitor -V (return code: 1)
Usage: dbus-monitor [--system | --session | --address ADDRESS] [--monitor | --profile | --pcap | --binary ] [watch expressions]
dbus-monitor --help (return code: 0)
Usage: dbus-monitor [--system | --session | --address ADDRESS] [--monitor | --profile | --pcap | --binary ] [watch expressions]