sysclassbacklight

Many Linux users prefer a hands-on approach to managing their devices, including adjusting the screen's backlight brightness directly from the command line. This is particularly useful when working in environments without a graphical user interface (GUI) or when you want to streamline your applications to work more efficiently in terms of power management. Here, we discuss how to manage backlight brightness in Linux through the /sys/class/backlight interface. A1: The /sys/class/backlight directory in Linux is part of the sysfs filesystem, which provides a way for the kernel to expose information about various kernel devices and drivers to user space.