xswxm/Ubuntu-Brightness-Adjustment

A script for adjusting the brightness for keyboard and screen

Ubuntu Brightness Adjustment

It is a bash script for adjusting brightness for both your keyboard and screen.

Setting Up

Edit the script. The existing file locations are for Asus ux303 running Ubuntu 16.04 so you may have to replace the path to yours.

if [ $1 == '-k' ]; then
    path="/sys/devices/platform/asus-nb-wmi/leds/asus::kbd_backlight/"
elif [ $1 == '-d' ]; then
    path="/sys/class/backlight/intel_backlight/"
else
    exit
fi

Move file to /usr/local/bin

sudo mv YourDownloadedFileFolder/brightness /usr/local/bin

Set persmission and user group to root

sudo chmod 755 /usr/local/bin/brightness
sudo chown root:root /usr/local/bin/brightness

Add exceptions for the script so it can run without asking for entering password

sudo visudo

Navigate to the last line and add a line as listed below (Replace the USERNAME with your username)

USERNAME ALL=(root) NOPASSWD: /usr/local/bin/brightness

Save it and you are ready to go

How to Use

Open System Settings - Keyboard - Shortcuts and add your commands

# Example commands
# Set the the value keyboard brightness to 0
sudo brightness -k -set 0
# Increase keyboard brightness by 1
sudo brightness -k -inc 1
# Decrease keyboard brightness by 1
sudo brightness -k -dec 1
# Set the the value screen brightness to 200
sudo brightness -d -set 200
# Increase screen brightness by 100
sudo brightness -d -inc 100
# Decrease screen brightness by 100
sudo brightness -d -dec 100

License

MIT