udevdeudevDeveloperKaySieverskay@vrfy.orgudevd8udevdDevice event managing daemonudevd/sbin/udevdDescriptionudevd listens to kernel uevents.
For every event, udevd executes matching instructions
specified in udev rules. See udev7.The behavior of the daemon can be configured using
udev.conf5,
its command-line options, environment variables, and on the kernel
command-line, or changed dynamically with udevadm
control.
OptionsDetach and run in the background.Print debug messages to standard error.Limit the number of events executed in parallel.Delay the execution of RUN
instructions by the given number of seconds. This option
might be useful when debugging system crashes during
coldplug caused by loading non-working kernel
modules.Set the number of seconds to wait for events to finish. After
this time the event will be terminated. The default is 30 seconds.Specify when udevd should resolve names of users and groups.
When set to (the default), names will be
resolved when the rules are parsed. When set to
, names will be resolved for every event.
When set to , names will never be resolved
and all devices will be owned by root.Environment$UDEV_LOG=Set the log level.Kernel command lineParameters starting with "rd." will be read when
udevd is used in an initrd.udev.log-priority=rd.udev.log-priority=Set the log level.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 instructions by the given
number of seconds. This option might be useful when
debugging system crashes during coldplug caused by loading
non-working kernel modules.udev.event-timeout=rd.udev.event-timeout=Wait for events to finish up to the given number
of seconds. This option might be useful if events are
terminated due to kernel drivers taking too long to initialize.net.ifnames=Network interfaces are renamed to give them predictable names
when possible. It is enabled by default; specifying 0 disables it.See Alsoudev.conf5,
udev7,
udevadm8