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Using the brightnessctl Command

Utility for reading and controlling device brightness for Linux operating systems. More information: <https://github.com/Hummer12007/brightnessctl#usage>.

  • List devices with changeable brightness:

brightnessctl *[-l|--list]*

  • Print the current brightness of the default device:

brightnessctl *[g|get]*

  • Print the current brightness of a specific device (can be a wildcard):

brightnessctl *[g|get]* *[-d|--device]* '*device_name*'

  • Set the brightness to a specified percentage:

brightnessctl *[s|set]* *50*%

  • Increase brightness by a specified percentage:

brightnessctl *[s|set]* +*10*%

  • Decrease brightness by a specified percentage:

brightnessctl *[s|set]* *10*%-

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