Backlight control utility
blctl controls backlight settings using the /sys/class/backlight interface of the Linux kernel. It supports changing brightness in a configurable number of steps, as well as powering the backlight on and off on devices that support power control over the backlight interface.
See the manual page.
The examples directory contains example acpid configuration
for system-wide brightness control with hotkeys.
git clone https://github.com/vicb3/blctl.git
cd blctl
DEB_BUILD_OPTIONS=noddebs DEB_BUILD_MAINT_OPTIONS=hardening=+all dpkg-buildpackage -us -uc -bgit clone https://github.com/vicb3/blctl.git
cd blctl
make
sudo make install PREFIX=/usr/localGPLv3: GNU General Public License version 3
See LICENSE for details.