So I have an Alienware 13 R3 with the OLED display, and for the first time I was able to change the brightness using the xrandr command. The problem was the absence of backlight in OLED displays, so I couldn't change the brightness wither with the keyboard, or in any other way. So now that I know I can change it, I want to put a key binding to change the brightness by let's say 0.1. I used this command to change the brightness:
xrandr --output eDP-1-1 --brightness .5
Does anyone know what command to use not to set the brightness, but to increase or decrease it by some value, so I can bind a macro to it. Thanks in advance!
P.S. I am completely new to Linux, so please don't go hard on me :P