How To Increase or Decrease LCD Brightness From Terminal

Howdy Guys,

As we all know brightness can be controlled from most laptop keyboards now. Even the mouse has long been used to increase and decrease LCD back light brightness.

But, today we’re going to use a command line tool called xbacklight.

Xbacklight is available system default software repo.


On Ubuntu:

sudo apt-get install xbacklight


sudo yum install xbacklight


sudo pacman -S xbacklight


All you need to do is to open terminal.

To increase or decrease, you add the value or percentage to increase or decrease by.

For example: Increase to 100 command is:

xbacklight -inc 100

Decrease to the minimum will be:

xbacklight -dec 100