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Utility for reading and controlling device brightness for Linux operating systems. More information:

  • List devices with changeable brightness:

brightnessctl --list

  • Print the current brightness of the display backlight:

brightnessctl get

  • Set the brightness of the display backlight to a specified percentage within range:

brightnessctl set {{50%}}

  • Increase brightness by a specified increment:

brightnessctl set {{+10%}}

  • Decrease brightness by a specified decrement:

brightnessctl set {{10%-}}