Screen brightness script added.

scripts/screen_controller.sh

@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+
+# Not for multiple screens.
+# Get the name of the screen.
+screenName="$(xrandr --query | grep "connected" | cut -d ' ' -f1 | head -n 1)"
+
+menuOptions=(
+    "1.0" "Maximum Brightness"
+    "0.75" "75 percent"
+    "0.5" "50 percent"
+    "0.25" "25 percent"
+    "0" "Screen Curtain"
+)
+
+brightness="$(yad --list --title "I38" --text "Set Screen Brightness" --columns 2 --hide-column 1 --column "" --column "Select" "${menuOptions[@]}")"
+
+if [[ ${#brightness} -lt 1 ]]; then
+    exit 0
+fi
+
+xrandr --output ${screenName} --brightness ${brightness%%|*} &&
+    spd-say -P important -Cw "Screen set to ${brightness##*|}."
+
+exit 0