backlight_control
Adjust screen backlight brightness by percentage.
TLDR
Increase the backlight by a percentage
$ backlight_control +[5]
Decrease the backlight by a percentage$ backlight_control -[5]
Set the backlight to a specific percentage$ backlight_control [90]
Display help$ backlight_control
SYNOPSIS
backlight_control [+|-]percentage
DESCRIPTION
backlight_control adjusts the screen backlight brightness on Linux systems using percentage values. It provides a simple interface to the kernel's backlight subsystem.
The tool works with laptop displays and other devices that expose backlight control through /sys/class/backlight/.
PARAMETERS
+n
Increase brightness by n percent-n
Decrease brightness by n percentn
Set brightness to n percent (0-100)
CAVEATS
Requires appropriate permissions to write to backlight control files. May require adding the user to a video or similar group. Only works with hardware that exposes backlight controls through the sysfs interface.
SEE ALSO
xbacklight(1), brightnessctl(1), light(1)