A simple backlight controller for intel_backlight in Rust. This code makes use of DBus system bus in Linux. Through the bus a user can make some calls like SetBrightness which bypass the requirenent of root access, and thus modify the brightness. The code can then be used from a HotKey Daemon Like sxhkd to bind the command to keyboard shortcuts (a setup guide is provided below).

The script provides 3 basic commands:

• brightrs -i [VAL] increases the screen brightness by 5%;
• brightrs -d [VAL] decreases screen brightness by 5%;
• brightrs -s [VAL] set a specific value in the possible range.