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udev - A rule-based device node and kernel event manager

Udev creates and removes device nodes in /dev for devices discovered or removed from the system. It receives events via kernel netlink messages and dispatches them according to rules in /usr/lib/udev/rules.d/. Matching rules may name a device node, create additional symlinks to the node, call tools to initialize a device, or load needed kernel modules.
244.2
Ubuntu iconUbuntu 20.04
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Debian iconDebian 10.0
OpenSUSE iconOpenSUSE Tumbleweed
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Ubuntu iconUbuntu 19.10
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Debian iconDebian 10.0
Debian iconDebian 9.0
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Ubuntu iconUbuntu 19.04
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Ubuntu iconUbuntu 18.10
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Ubuntu iconUbuntu 18.04 LTS
234
OpenSUSE iconOpenSUSE Leap 15.0
OpenSUSE iconOpenSUSE Leap 15.1
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Ubuntu iconUbuntu 17.10
232
Debian iconDebian 9.0
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Ubuntu iconUbuntu 16.04 LTS
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OpenSUSE iconOpenSUSE Leap 42.3
DistributionVersionSincePackageInstalledPackager
Debian iconDebian 10.0 buster/maindeb241-7~deb10u3Feb 081.22 MiB8.09 MiB
Debian iconDebian 10.0 buster-backports/maindeb244-3~bpo10+1Dec 301.37 MiB8.73 MiB
Debian iconDebian 9.0 stretch/maindeb232-25+deb9u12Sep 071.06 MiB6.9 MiB
Debian iconDebian 9.0 stretch-backports/maindeb241-5~bpo9+1Jun 171.23 MiB8.13 MiB
OpenSUSE iconOpenSUSE Leap 15.0 ossrpm234-lp150.19.12019-01-171.39 MiB7.37 MiBhttps://bugs.opensuse.org
OpenSUSE iconOpenSUSE Leap 15.0 update/ossrpm234-lp150.20.9.12019-01-181.4 MiB7.38 MiBhttp://bugs.opensuse.org
OpenSUSE iconOpenSUSE Leap 15.0 update/ossrpm234-lp150.20.6.12019-01-181.39 MiB7.38 MiBhttp://bugs.opensuse.org
OpenSUSE iconOpenSUSE Leap 15.0 update/ossrpm234-lp150.20.3.12019-01-181.39 MiB7.37 MiBhttp://bugs.opensuse.org
OpenSUSE iconOpenSUSE Leap 15.0 update/ossrpm234-lp150.20.20.1Nov 091.23 MiB7.39 MiBhttp://bugs.opensuse.org
OpenSUSE iconOpenSUSE Leap 15.0 update/ossrpm234-lp150.20.15.1Feb 271.41 MiB7.38 MiBhttp://bugs.opensuse.org
OpenSUSE iconOpenSUSE Leap 15.0 update/ossrpm234-lp150.20.12.12019-01-291.41 MiB7.38 MiBhttp://bugs.opensuse.org
OpenSUSE iconOpenSUSE Leap 15.1 ossrpm234-lp151.25.7Mar 141.41 MiB7.38 MiBhttps://bugs.opensuse.org
OpenSUSE iconOpenSUSE Leap 15.1 update/ossrpm234-lp151.26.7.1Feb 111.23 MiB7.39 MiBhttp://bugs.opensuse.org
OpenSUSE iconOpenSUSE Leap 15.1 update/ossrpm234-lp151.26.4.1Nov 051.23 MiB7.38 MiBhttp://bugs.opensuse.org
OpenSUSE iconOpenSUSE Leap 15.2 ossrpm234-lp152.28.1Jan 071.23 MiB7.38 MiBhttps://bugs.opensuse.org
OpenSUSE iconOpenSUSE Leap 42.3 ossrpm228-27.22019-01-171.24 MiB6.53 MiBhttp://bugs.opensuse.org
OpenSUSE iconOpenSUSE Leap 42.3 update/ossrpm228-71.1Jun 171.28 MiB6.56 MiBhttp://bugs.opensuse.org
OpenSUSE iconOpenSUSE Leap 42.3 update/ossrpm228-68.1Feb 281.27 MiB6.56 MiBhttp://bugs.opensuse.org
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OpenSUSE iconOpenSUSE Tumbleweed ossrpm244-2.11 - 01:421.39 MiB7.55 MiBhttps://bugs.opensuse.org
Ubuntu iconUbuntu 17.10 artful/maindeb234-2ubuntu122017-11-101.04 MiB7.3 MiB
Ubuntu iconUbuntu 17.10 artful-security/maindeb234-2ubuntu12.12017-11-101.04 MiB7.3 MiB
Ubuntu iconUbuntu 17.10 artful-updates/maindeb234-2ubuntu12.42018-06-121.04 MiB7.3 MiB
Ubuntu iconUbuntu 18.04 LTS bionic/maindeb237-3ubuntu102018-06-121.05 MiB7.54 MiB
Ubuntu iconUbuntu 18.04 LTS bionic-proposed/maindeb237-3ubuntu10.39Feb 061.05 MiB7.54 MiB
Ubuntu iconUbuntu 18.04 LTS bionic-security/maindeb237-3ubuntu10.38Feb 051.05 MiB7.54 MiB
Ubuntu iconUbuntu 18.04 LTS bionic-updates/maindeb237-3ubuntu10.391 - 11:151.05 MiB7.54 MiB
Ubuntu iconUbuntu 18.10 cosmic/maindeb239-7ubuntu102019-01-141.08 MiB7.75 MiB
Ubuntu iconUbuntu 18.10 cosmic-security/maindeb239-7ubuntu10.12Apr 081.08 MiB7.76 MiB
Ubuntu iconUbuntu 18.10 cosmic-updates/maindeb239-7ubuntu10.14Jun 171.08 MiB7.76 MiB
Ubuntu iconUbuntu 19.04 disco/maindeb240-6ubuntu5Jun 171.12 MiB8.02 MiB
Ubuntu iconUbuntu 19.04 disco-security/maindeb240-6ubuntu5.7Sep 101.12 MiB8.03 MiB
Ubuntu iconUbuntu 19.04 disco-updates/maindeb240-6ubuntu5.8Nov 251.12 MiB8.03 MiB
Ubuntu iconUbuntu 19.10 eoan/maindeb242-7ubuntu3Oct 141.15 MiB8.17 MiB
Ubuntu iconUbuntu 19.10 eoan-proposed/maindeb242-7ubuntu3.7Feb 061.15 MiB8.18 MiB
Ubuntu iconUbuntu 19.10 eoan-security/maindeb242-7ubuntu3.6Feb 051.15 MiB8.18 MiB
Ubuntu iconUbuntu 19.10 eoan-updates/maindeb242-7ubuntu3.71 - 10:461.15 MiB8.18 MiB
Ubuntu iconUbuntu 20.04 focal/maindeb244.2-1ubuntu1Feb 141.28 MiB8.81 MiB
Ubuntu iconUbuntu 16.04 LTS xenial/maindeb229-4ubuntu42017-11-10967 kiB6.56 MiB
Ubuntu iconUbuntu 16.04 LTS xenial-security/maindeb229-4ubuntu21.27Feb 05972 kiB6.57 MiB
Ubuntu iconUbuntu 16.04 LTS xenial-updates/maindeb229-4ubuntu21.27Feb 05972 kiB6.57 MiB

Manual pages

systemd.link(5)

systemd.link - Network device configuration

udev.conf(5)

udev.conf - Configuration for device event managing daemon

hwdb(7)

hwdb - Hardware Database

udev(7)

udev - Dynamic device management

systemd-hwdb(8)

systemd-hwdb - hardware database management tool

systemd-udev-settle.service(8)

systemd-udev-settle.service - Wait for all pending udev events to be handled

systemd-udevd.service(8)

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

udevadm(8)

udevadm - udev management tool

Latest updates

Ubuntu icon

Ubuntu 18.04 LTS bionic-updates/main: Updated from 237-3ubuntu10.38 to 237-3ubuntu10.39

1 - 11:15
Ubuntu icon

Ubuntu 19.10 eoan-updates/main: Updated from 242-7ubuntu3.6 to 242-7ubuntu3.7

1 - 10:46
OpenSUSE icon

OpenSUSE Tumbleweed oss: Updated from 244-1.4 to 244-2.1

1 - 01:42
  • Import commit f8adabc2b1f3e3ad150e7a3bfa88341eda5a8a57 (merge v244.2) 77c04ce5c2 hwdb: update to v245-rc1
    b4eb884824 Fix typo in function name
    e2d4cb9843 polkit: when authorizing via PK let's re-resolve callback/userdata instead of caching it 83bfc0d8dd sd-bus: introduce API for re-enqueuing incoming messages 5926f9f172 polkit: use structured initialization
    0697d0d972 polkit: on async pk requests, re-validate action/details 2589995acd polkit: reuse some common bus message appending code 5b2442d5c3 bus-polkit: rename return error parameter to ret_error 0a19ff7004 shared: split out polkit stuff from bus-util.c ? bus-polkit.c 1325dfb577 test: adapt to the new capsh format
    3538fafb47 meson: update efi path detection to gnu-efi-3.0.11 3034855a5b presets: "disable" all passive targets by default c2e3046819 shared/sysctl-util: normalize repeated slashes or dots to a single value 6f4364046f dhcp6: do not use T1 and T2 longer than one provided by the lease 0ed6cda28d network: fix implicit type conversion warning by GCC-10 f6a5c02d26 bootspec: parse random-seed-mode line in loader.conf ddc5dca8a7 sd-boot: fix typo
    2bbbe9ae41 test: Synchronize journal before reading from it 072485d661 sd-bus: fix introspection bug in signal parameter names 80af3cf5e3 efi: fix build.
    ...
Ubuntu icon

Ubuntu 20.04 focal-proposed/main: Version 244.2-1ubuntu1 removed

Feb 14
Ubuntu icon

Ubuntu 20.04 focal/main: Updated from 244.1-0ubuntu3 to 244.2-1ubuntu1

Feb 14
Ubuntu icon

Ubuntu 20.04 focal-proposed/main: Version 244.2-1ubuntu1 introduced

Feb 11
Ubuntu icon

Ubuntu 20.04 focal/main: Updated from 244.1-0ubuntu2 to 244.1-0ubuntu3

Feb 11
Ubuntu icon

Ubuntu 20.04 focal-proposed/main: Version 244.1-0ubuntu3 removed

Feb 11
OpenSUSE icon

OpenSUSE Leap 15.1 update/oss: Updated from 234-lp151.26.4.1 to 234-lp151.26.7.1

Feb 11
  • Fix bsc#1162108 CVE-2020-1712
    Add 0001-polkit-on-async-pk-requests-re-validate-action-detai.patch Add 0002-sd-bus-introduce-API-for-re-enqueuing-incoming-messa.patch Add 0003-polkit-when-authorizing-via-PK-let-s-re-resolve-call.patch
OpenSUSE icon

OpenSUSE Tumbleweed oss: Updated from 244-1.2 to 244-1.4

Feb 09
  • Temporarily restore /sbin/{udevd,udevadm) obsolete symlinks They're restored until YaST stop using them (see boo#1160890)
Debian icon

Debian 10.0 buster-proposed-updates/main: Version 241-7~deb10u3 removed

Feb 08
Debian icon

Debian 10.0 buster/main: Updated from 241-7~deb10u2 to 241-7~deb10u3

Feb 08
  • core: set fs.file-max sysctl to LONG_MAX rather than ULONG_MAX. Since kernel 5.2 (but also stable kernels like 4.19.53) the kernel thankfully returns proper errors when we write a value out of range to the sysctl. Which however breaks writing ULONG_MAX to request the maximum value. Hence let's write the new maximum value instead, LONG_MAX. (Closes: #945018)
  • core: change ownership/mode of the execution directories also for static users.
    This ensures that execution directories like CacheDirectory and StateDirectory are properly chowned to the user specified in User= before launching the service. (Closes: #919231)
Ubuntu icon

Ubuntu 18.04 LTS bionic-proposed/main: Updated from 237-3ubuntu10.34 to 237-3ubuntu10.39

Feb 06
Ubuntu icon

Ubuntu 20.04 focal-proposed/main: Version 244.1-0ubuntu3 introduced

Feb 05
Ubuntu icon

Ubuntu 19.10 eoan-updates/main: Updated from 242-7ubuntu3.2 to 242-7ubuntu3.6

Feb 05
Ubuntu icon

Ubuntu 16.04 LTS xenial-updates/main: Updated from 229-4ubuntu21.23 to 229-4ubuntu21.27

Feb 05
Ubuntu icon

Ubuntu 18.04 LTS bionic-security/main: Updated from 237-3ubuntu10.29 to 237-3ubuntu10.38

Feb 05
Ubuntu icon

Ubuntu 18.04 LTS bionic-updates/main: Updated from 237-3ubuntu10.33 to 237-3ubuntu10.38

Feb 05
Ubuntu icon

Ubuntu 16.04 LTS xenial-security/main: Updated from 229-4ubuntu21.21 to 229-4ubuntu21.27

Feb 05
Ubuntu icon

Ubuntu 19.10 eoan-security/main: Version 242-7ubuntu3.6 introduced

Feb 05

Related packages

udev-browse - A Udev browsing tool
udev-browse-debuginfo - Debug information for package udev-browse
udev-configure-printer - Utility to autoconfigure printers when plugged
udev-configure-printer-debuginfo - Debug information for package udev-configure-printer
udev-debuginfo - Debug information for package udev
udev-discover - Sysfs browsing tool focused on helping udev users and developers
udev-mini - A rule-based device node and kernel event manager
udev-mini-debuginfo - Debug information for package udev-mini
udev-persistent-ifnames - Persistent classic network interface naming scheme
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