Stichoza/linux-brightness-binary

Linux command line tool for setting display brightness on laptops

linux-brightness-binary

Linux command line tool for setting display brightness on laptops

Installing

Simply copy the bin/bright executable to your /bin folder

Usage

sudo bright 0   # minimum brightness
sudo bright 15  # maximum brightness

Additional info

If you are here just because your fn keys does not work, take a look at this answer on askubuntu.com