3 `sysbacklight` is a tiny tool meant to be used on configurations where `xbacklight` does not work.
5 It changes the display brightness on the first sysfs backlight device of type raw.
7 It is written in C using `libsysfs` so it is possible to install it SUID-root.
10 `sysbacklight` is free software under the GNU AGPL version 3. See `LICENSE` for details.
13 `sysbacklight` needs libsysfs.
15 On Debian, you can install them with:
17 `# apt install libsysfs-dev`
21 ### Report the current brightness level in percent
23 `sysbacklight` or `sysbacklight ?`
25 ### Set brightness to 42%
29 ### Increase brightness by 10%
32 ### Increase brightness by 10%