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Udev rules to manage brightness & desktop notifications

udev is a replacement for the Device File System (DevFS) starting with the Linux 2.6 kernel series. It allows you to identify devices based on their properties, like vendor ID and device ID, dynamically. udev runs in userspace (as opposed to devfs which was executed in kernel space).

udev rules written by the administrator go in /etc/udev/rules.d/, their file name has to end with .rules. The u…