diff --git a/brightness b/brightness
new file mode 100755
index 0000000..676a0dd
--- /dev/null
+++ b/brightness
@@ -0,0 +1,10 @@
+#!/bin/bash
+
+input=$1
+input=${input%\%}
+re_num='^100$|(^[0-9]{1,2}$)' #100 nebo [0-9] jednou az dvakrat
+[[ $input =~ $re_num ]] && val=$(($input*240)) || echo "NavN"
+
+su -c "sudo brightnessctl s $val" bash >/dev/null
+
+#echo "brightness set to $val"