udev

A rule-based device node and kernel event manager

This package provides systemd-udevd. The udev daemon receives device uevents directly from the kernel whenever it adds or removes a device from the system in /dev, or it changes its state. When udev receives a device event, it matches its configured set of rules, located in /usr/lib/udev/rules.d/, against various device attributes to identify the device. Rules that match may adjust device node permissions, create meaningful symlink names or provide additional device information to be stored in the udev database. The udev daemon may also rename network interfaces and perform various network device configurations, see systemd.link(5) for more details. This package also provides various tools and services that operate on devices exclusively. For example it contains systemd-cryptsetup to manage encrypted block devices as well as systemd-growfs to instruct the kernel to grow the mounted filesystem to full size of the underlying block device. This package shouldn't be necessary in containers.