brightnessctl command not found

In this troubleshooting guide we learn how to fix brightnessctl command not found error message

Introduction

When you run more command in linux terminal / console, you get the following error message

brightnessctl: command not found

or when using sudo you get the following error message

sudo: brightnessctl: command not found

In Ubuntu brightnessctl is provided by brightnessctl package.

brightnessctl is:

brightnessctl is a small utility to control the brightness of a screen’s backlight.

This package contains the brightnessctl utility itself.

To fix this problem, we can install more using the command below.

sudo apt-get -y install brightnessctl

This command might take some time to finish depending on your machine internet connection.

You can also use apt command to install brightnessctl.

sudo apt -y install brightnessctl

Or if you have aptitude installed you can use the following command.

sudo aptitude install brightnessctl

In this tutorial we learn how to fix brightnessctl command not found error in Ubuntu / Debian / Kali Linux or Raspbian distribution.