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udevadm — Linux `udev` management tool. More information: <https://www.freedesktop.org/software/systemd/man/la

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Problem

How to use the udevadm command: Linux udev management tool. More information: <https://www.freedesktop.org/software/systemd/man/latest/udevadm.html>.

Solution

udevadm — Linux udev management tool. More information: <https://www.freedesktop.org/software/systemd/man/latest/udevadm.html>.

Monitor all device events:
sudo udevadm monitor


Print uevents sent out by the kernel:
sudo udevadm monitor {{[-k|--kernel]}}


Print device events after being processed by udev:
sudo udevadm monitor {{[-u|--udev]}}


List attributes of device /dev/sda:
sudo udevadm info {{[-a|--attribute-walk]}} {{/dev/sda}}


Reload all udev rules:
sudo udevadm control {{[-R|--reload]}}


Trigger all udev rules to run:
sudo udevadm trigger


Test an event run by simulating loading of /dev/sda:
sudo udevadm test {{/dev/sda}}

Code Snippets

Monitor all device events

sudo udevadm monitor

Print `uevents` sent out by the kernel

sudo udevadm monitor {{[-k|--kernel]}}

Print device events after being processed by `udev`

sudo udevadm monitor {{[-u|--udev]}}

List attributes of device `/dev/sda`

sudo udevadm info {{[-a|--attribute-walk]}} {{/dev/sda}}

Reload all `udev` rules

sudo udevadm control {{[-R|--reload]}}

Context

tldr-pages: linux/udevadm

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