merge x-brightness scripts

.local/bin/x-brightness

@@ -0,0 +1,26 @@
+#!/usr/bin/env sh
+
+[ -z "$AMOUNT" ] && AMOUNT=5
+
+notify() {
+	notify-send "$@" -h string:x-dunst-stack-tag:'brightnessctl' -a 'brightnessctl'
+}
+
+max=$(brightnessctl max)
+br=$(brightnessctl get)
+brp=$((100 * br / max))
+
+case "$1" in
+up) brp=$((brp + AMOUNT)) ;;
+down) brp=$((brp - AMOUNT)) ;;
+*)
+	echo 'E: could not decide what brightness action to perform!' >&2
+	notify 'could not decide what audio action to perform!' -u critical -t 5000
+	exit 1
+	;;
+esac
+brp=$((brp - (brp % AMOUNT)))
+
+brightnessctl set $brp%
+ico=display-brightness-symbolic
+notify -u low -i "$ico" -h "int:value:$brp" "brightness: $brp%"