ModemManager 1.4.12 Copyright (2008 - 2014) The ModemManager authors License GPLv2+: GNU GPL version 2 or later <http://gnu.org/licenses/gpl-2.0.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.

Usage: ModemManager [OPTION...] DBus system service to communicate with modems. Help Options: -h, --help Show help options --help-all Show all help options --help-test Show Test options Application Options: -V, --version Print version --debug Run with extended debugging capabilities --log-level=INFO Log level: one of [ERR, WARN, INFO, DEBUG] --log-file Path to log file --timestamps Show timestamps in log output --relative-timestamps Use relative timestamps (from MM start)