Provided by: udev_124-8_i386 bug

NAME

       udevadm - udev management tool

SYNOPSIS

       udevadm info [options]

       udevadm trigger [options]

       udevadm settle [options]

       udevadm control [options] instruction

       udevadm monitor [options]

       udevadm test [options] devpath

       udevadm version

       udevadm help

DESCRIPTION

       udevadm expects a command and command specific options. It controls the
       runtime behavior of udev, requests kernel events, manages the event
       queue, and provides simple debugging mechanisms.

OPTIONS

   udevadm info options
       Queries the udev database for device information stored in the udev
       database. It can also query the properties of a device from its sysfs
       representation to help creating udev rules that match this device.

       --query=type
           Query the database for specified type of device data. It needs the
           --path or --name to identify the specified device. Valid queries
           are: name, symlink, path, env, all.

       --path=devpath
           The devpath of the device to query.

       --name=file
           The name of the device node or a symlink to query

       --root
           The udev root directory: /dev. If used in conjunction with a name
           or symlink query, the query returns the absolute path including the
           root directory.

       --attribute-walk
           Print all sysfs properties of the specified device that can be used
           in udev rules to match the specified device. It prints all devices
           along the chain, up to the root of sysfs that can be used in udev
           rules.

       --device-id-of-file=file
           Print major/minor numbers of the underlying device, where the file
           lives on.

       --export-db
           Export the content of the udev database.

       --version
           Print version.

       --help
           Print help text.

   udevadm trigger [options]
       Request device uevents, usually used to replay events at system
       coldplug.

       --verbose
           Print the list of devices which will be triggered.

       --dry-run
           Do not actually trigger the event.

       --retry-failed
           Trigger only the events which are failed during a previous run.

       --action=action
           Type of event to be triggered. The default value is "add".

       --subsystem-match=subsystem
           Trigger events for devices which belong to a matching subsystem.
           This option can be specified multiple times and supports shell
           style pattern matching.

       --subsystem-nomatch=subsystem
           Do not trigger events for devices which belong to a matching
           subsystem. This option can be specified multiple times and supports
           shell style pattern matching.

       --attr-match=attribute=value
           Trigger events for devices with a matching sysfs attribute. If a
           value is specified along with the attribute name, the content of
           the attribute is matched against the given value using shell style
           pattern matching. If no value is specified, the existence of the
           sysfs attribute is checked. This option can be specified multiple
           times.

       --attr-nomatch=attribute=value
           Do not trigger events for devices with a matching sysfs attribute.
           If a value is specified along with the attribute name, the content
           of the attribute is matched against the given value using shell
           style pattern matching. If no value is specified, the existence of
           the sysfs attribute is checked. This option can be specified
           multiple times.

       --socket=path
           Pass the synthesized events to the specified socket, instead of
           triggering a global kernel event. All available event values will
           be send in the same format the kernel sends an uevent, or
           RUN+="socket:path" sends a message. If the first character of the
           specified path is an @ character, an abstract namespace socket is
           used, instead of an existing socket file.

       --env=KEY=value
           Pass an additional environemt key to the event. This works only
           with the --socket option.

   udevadm settle [options]
       Watches the udev event queue, and exits if all current events are
       handled.

       --timeout=seconds
           Maximum number of seconds to wait for the event queue to become
           empty. The default value is 180 seconds.

       --help
           Print help text.

   udevadm control command
       Modify the internal state of the running udev daemon.

       --log_priority=value
           Set the internal log level of udevd. Valid values are the numerical
           syslog priorities or their textual representations: err, info and
           debug.

       --stop_exec_queue
           Signal udevd to stop executing new events. Incoming events will be
           queued.

       --start_exec_queue
           Signal udevd to enable the execution of events.

       --reload_rules
           Signal udevd to reload the rules from the config.

       --env=KEY=value
           Set global variable.

       --max_childs=value
           Set the maximum number of events, udevd will handle at the same
           time.

       --max_childs_running=value
           Set the maximum number of events, which are allowed to run at the
           same time.

       --help
           Print help text.

   udevadm monitor [options]
       Listens to the kernel uevents and events sent out by a udev rule and
       prints the devpath of the event to the console. It can be used to
       analyze the event timing, by comparing the timestamps of the kernel
       uevent and the udev event.

       --environment
           Print the complete environment for all events. Can be used to
           compare the kernel supplied and the udev added environment values.

       --kernel
           Print the kernel uevents.

       --udev
           Print the udev event after the rule processing.

       --help
           Print help text.

   udevadm test [options] devpath
       Simulate a udev event run for the given device, and print out debug
       output. Unless forced to, no device node or symlink will be created.

       --action=string
           The action string.

       --subsystem=string
           The subsystem string.

       --force
           Force the creation of a device node or symlink. Usually the test
           run prints only debug output.

       --help
           Print help text.

   udevadm version
       Print version number.

   udevadm help
       Print help text.

AUTHOR

       Written by Kay Sievers <kay.sievers@vrfy.org>.

SEE ALSO

       udev(7) udevd(8)