{
    "mode": "man",
    "parameter": "ModemManager",
    "section": "8",
    "url": "https://www.chedong.com/phpMan.php/man/ModemManager/8/json",
    "generated": "2026-06-15T19:54:31Z",
    "synopsis": "ModemManager [OPTION...]",
    "sections": {
        "NAME": {
            "content": "ModemManager - mobile broadband modem management daemon\n\n",
            "subsections": []
        },
        "SYNOPSIS": {
            "content": "ModemManager [OPTION...]\n\n",
            "subsections": []
        },
        "DESCRIPTION": {
            "content": "ModemManager  provides  a  unified  high  level  API  for communicating with mobile broadband\nmodems, regardless of the protocol used to communicate with the actual  device  (Generic  AT,\nvendor-specific AT, QCDM, QMI, MBIM...).\n\nModemManager is a DBus-based system daemon and is not meant to be used directly from the com‐\nmand line.\n\n",
            "subsections": []
        },
        "APPLICATION OPTIONS": {
            "content": "",
            "subsections": [
                {
                    "name": "--filter-policy=<policy>",
                    "content": "Specify which ports are probed and how:\n\n'ALLOWLIST-ONLY'\nOnly devices or ports explicitly allowlisted with the  'IDMMDEVICEPROCESS'\nudev tag are probed.\n\n'STRICT'\nOnly  the TTY ports that are heuristically determined to be very likely to be\nmodem ports are probed. Nay end up ignoring some devices.\n",
                    "long": "--filter-policy",
                    "arg": "<policy>"
                },
                {
                    "name": "--no-auto-scan",
                    "content": "Fully disable udev-based auto-scan looking for devices.\n",
                    "long": "--no-auto-scan"
                },
                {
                    "name": "--initial-kernel-events=<filename>",
                    "content": "Specify location of the file where the list of initial kernel events is available. The\nModemManager daemon will process this file on startup.\n",
                    "long": "--initial-kernel-events",
                    "arg": "<filename>"
                },
                {
                    "name": "--debug",
                    "content": "Runs  ModemManager  with \"DEBUG\" log level and without daemonizing. This is useful for\ndebugging, as it directs log output to the controlling terminal in addition to syslog.\n",
                    "long": "--debug"
                },
                {
                    "name": "-V, --version",
                    "content": "Print the ModemManager software version and exit.\n",
                    "flag": "-V",
                    "long": "--version"
                },
                {
                    "name": "-h, --help",
                    "content": "Show application options.\n\n",
                    "flag": "-h",
                    "long": "--help"
                }
            ]
        },
        "LOGGING OPTIONS": {
            "content": "",
            "subsections": [
                {
                    "name": "--log-level=<level>",
                    "content": "Sets how much information ModemManager sends to the log destination (usually  syslog's\n\"daemon\"  facility).  By  default, only informational, warning, and error messages are\nlogged. Given level must be one of \"ERR\", \"WARN\", \"INFO\" or \"DEBUG\".\n",
                    "long": "--log-level",
                    "arg": "<level>"
                },
                {
                    "name": "--log-file=<filename>",
                    "content": "Specify location of the file where ModemManager will dump its log messages, instead of\nsyslog.\n",
                    "long": "--log-file",
                    "arg": "<filename>"
                },
                {
                    "name": "--log-journal",
                    "content": "Output log message to the systemd journal.\n",
                    "long": "--log-journal"
                },
                {
                    "name": "--log-timestamps",
                    "content": "Include absolute timestamps in the log output.\n",
                    "long": "--log-timestamps"
                },
                {
                    "name": "--log-relative-timestamps",
                    "content": "Include timestamps, relative to the start time of the daemon, in the log output.\n\n",
                    "long": "--log-relative-timestamps"
                }
            ]
        },
        "TEST OPTIONS": {
            "content": "",
            "subsections": [
                {
                    "name": "--test-session",
                    "content": "Run the ModemManager daemon in the Session bus instead of the System bus.\n",
                    "long": "--test-session"
                },
                {
                    "name": "--test-enable",
                    "content": "Enable the Test DBus interface in the daemon.\n",
                    "long": "--test-enable"
                },
                {
                    "name": "--test-plugin-dir=[PATH]",
                    "content": "Specify an alternate directory where the daemon should look for vendor plugins.\n\n",
                    "long": "--test-plugin-dir",
                    "arg": "[PATH]"
                }
            ]
        },
        "AUTHOR": {
            "content": "Aleksander Morgado <aleksander@aleksander.es>\n\n",
            "subsections": []
        },
        "SEE ALSO": {
            "content": "mmcli(1), NetworkManager(8)\n\n\n\n5 September 2014                           MODEMMANAGER(8)",
            "subsections": []
        }
    },
    "summary": "ModemManager - mobile broadband modem management daemon",
    "flags": [],
    "examples": [],
    "see_also": [
        {
            "name": "mmcli",
            "section": "1",
            "url": "https://www.chedong.com/phpMan.php/man/mmcli/1/json"
        },
        {
            "name": "NetworkManager",
            "section": "8",
            "url": "https://www.chedong.com/phpMan.php/man/NetworkManager/8/json"
        }
    ]
}