brightnessctl
CLI tool to read and control screen and LED brightness on Linux system
brightnessctl is a lightweight command-line utility written in C that enables users to read and control device brightness on Linux systems. At its core, the tool interacts with brightness interfaces exposed by backlight and LED devices, making it possible to query current brightness, adjust levels, and even restore previously saved states. By default, brightnessctl searches relevant device classes for available brightness controllers and, if no device is specified, automatically selects the...