Helps set the brightness outside X server for ThinkPad X230. Probably works with other laptops making use of /sys/class/backlight.

The idea was to create a binary which will have a sticky UID so no root is necessary.

# clone the repository
git clone https://github.com/jeremija/bright
cd bright

# build
make

# to install binary in /usr/local/bin
sudo make install

bright [-|+]<percentage>

# decrease brightness by 10%:
bright -10

# increase brightness by 10%:
bright +10

# set brightness to 70%:
bright 70

The default brightness backend is set to intel_backlight. The BRIGHT_BACKEND environment variable can be used to override the default setting. Check the /sys/class/backlight directory to find which backend to use.

MIT