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

Submitted by: @import:tldr-pages·Mar 2, 2026·

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commandandcontrollingclireadingbrightnessctlforutility

linux

Problem

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

Solution

brightnessctl — 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}}%-

Code Snippets

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}}%

Context

tldr-pages: linux/brightnessctl

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