set device mode permanently with udev rule Post: 302574676

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systemd-udevd

SYSTEMD-UDEVD.SERVICE(8)				       systemd-udevd.service					  SYSTEMD-UDEVD.SERVICE(8)

NAME

       systemd-udevd.service, systemd-udevd-control.socket, systemd-udevd-kernel.socket, systemd-udevd - Device event managing daemon

SYNOPSIS

       systemd-udevd.service

       systemd-udevd-control.socket

       systemd-udevd-kernel.socket

       /usr/lib/systemd/systemd-udevd [--daemon] [--debug] [--children-max=] [--exec-delay=] [--resolve-names=early|late|never] [--version]
				      [--help]

DESCRIPTION

       systemd-udevd listens to kernel uevents. For every event, systemd-udevd executes matching instructions specified in udev rules. See
       udev(7).

       The behavior of the running daemon can be changed with udevadm control.

OPTIONS

       --daemon
	   Detach and run in the background.

       --debug
	   Print debug messages to stderr.

       --children-max=
	   Limit the number of events executed in parallel.

       --exec-delay=
	   Delay the execution of RUN instruction by the given number of seconds. This option might be useful when debugging system crashes during
	   coldplug caused by loading non-working kernel modules.

       --resolve-names=
	   Specify when systemd-udevd should resolve names of users and groups. When set to early (the default) names will be resolved when the
	   rules are parsed. When set to late names will be resolved for every event. When set to never names will never be resolved and all
	   devices will be owned by root.

       --version
	   Print version number.

       --help
	   Print help text.

ENVIRONMENT

       $UDEV_LOG=
	   Set the logging priority.

KERNEL COMMAND LINE

       Parameters starting with "rd." will be read when systemd-udevd is used in an initrd.

       udev.log-priority=, rd.udev.log-priority=
	   Set the logging priority.

       udev.children-max=, rd.udev.children-max=
	   Limit the number of events executed in parallel.

       udev.exec-delay=, rd.udev.exec-delay=
	   Delay the execution of RUN instruction by the given number of seconds. This option might be useful when debugging system crashes during
	   coldplug caused by loading non-working kernel modules.

       net.ifnames=
	   Network interfaces are renamed to give them predictable names when possible. It is enabled by default, specifying 0 disables it.

CONFIGURATION FILE

       udev expects its main configuration file at /etc/udev/udev.conf. It consists of a set of variables allowing the user to override default
       udev values. All empty lines or lines beginning with '#' are ignored. The following variables can be set:

       udev_log
	   The logging priority. Valid values are the numerical syslog priorities or their textual representations: err, info and debug.

SEE ALSO

       udev(7), udevadm(8)

systemd 208														  SYSTEMD-UDEVD.SERVICE(8)