BRIGHTNESSCTL(1) brightnessctl BRIGHTNESSCTL(1) (NAME) brightnessctl - (SYNOPSIS) brightnessctl [] [] [...] (OPTIONS) -h, --help . -l, --list . -q, --quiet . -p, --pretend . -m, --machine-readable . -n, --min-value=VALUE . -e, --exponent=K ( ). . : % = [VALUE]^[K] * [MAX] * 100^-[K] . -s, --save . -r, --restore . -d, --device=DEVICE ( wildcard ). -c, --class=CLASS . -v, --version . (OPERATIONS) i, info . g, get . m, max . s, set VALUE . (VALUES) VALUE set . : brightnessctl set 500 . brightnessctl set 50% . brightnessctl set 50- . brightnessctl set +10 . brightnessctl set 50%- . brightnessctl set +10% . (AUTHORS) Mykyta Holubakha . brightnessctl : https://github.com/Hummer12007/brightnessctl brightnessctl 24th Jan 2018 BRIGHTNESSCTL(1)