/dev/ and hotplug management daemon
udev is a daemon which dynamically creates and removes device nodes from
/dev/, handles hotplug events and loads drivers at boot time.
How does udev work?
Short summary: when a driver is loaded it makes some information available
in /sys/ and a message is sent to udevd which reads them and creates the
This means that:
- modules cannot be loaded on demand when applications open their device,
because the device is not yet there!
- since modules are not loaded on demand, if for some reason
udev - Linux userspace device management
Integrating udev in the system has complex dependencies and may differ from
distribution to distribution. A system may not be able to boot up or work
reliably without a properly installed udev version. The upstream udev project
does not recommend to replace a distro's udev installation with the upstream
The upstream udev project's set of default
= The udev keymap tool =
== Introduction ==
This udev extension configures computer model specific key mappings. This is
particularly necessary for the non-standard extra keys found on many laptops,
such as "brightness up", "next song", "www browser", or "suspend". Often these
are accessed with the Fn key.
Every key produces a "scan code", which is highly vendor/model specific for the
udev (0.140-1) unstable; urgency=low
Starting from this release the last applicable NAME directiv
GUdev moved from /usr to /.
UDEV(7) udev UDEV(7)
udev - Linux dyn
SCSI_ID(8) Linux Administrator's Manual SCSI_ID(8)
scsi_id - retrie
UDEVADM(8) udevadm UDEVADM(8)
udevadm - udev m
Browse inside udev_164-3_amd64.deb
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