Small shell script to control screen backlight in linux
Control display backlight.
Usage: /usr/local/bin/blight.py [+|-]0-100%
Examples:
/usr/local/bin/blight.py +15% - increase brightness by 15%
/usr/local/bin/blight.py -10% - decrease brightness by 10%
/usr/local/bin/blight.py 75% - set brightness to 75%
git clone https://github.com/joohoi/blight
sudo cp blight/blight.py /usr/local/bin
sudo chmod a+x /usr/local/bin
Edit /usr/local/bin/blight.py to point it to correct directory for backlight control, eg:
BACKLIGHT_DIR = "/sys/class/backlight/intel_backlight"
Add following line to your sudoers file to let unprivileged users to run the script with appropriate privileges using sudo
ALL ALL=NOPASSWD: /usr/local/bin/blight.py
If you are running i3-wm and have multimedia keys, check the keycodes using xev and add the appropriate bindings. In my system:
bindsym XF86MonBrightnessUp exec sudo blight.py +5%
bindsym XF86MonBrightnessDown exec sudo blight.py -5%
Refresh your i3 configuration (default mod+shift+r) and you should be good to go