#!/usr/bin/bash

BRIGHTNESS_DIR=/sys/class/backlight/intel_backlight
MAX_BRIGHTNESS=$(cat $BRIGHTNESS_DIR/max_brightness)
CURR_BRIGHTNESS=$(cat $BRIGHTNESS_DIR/actual_brightness)

ICON_BRIGHT_SUN="☀"
BRIGHTNESS_P=$(echo - | awk -v max="$MAX_BRIGHTNESS" -v curr="$CURR_BRIGHTNESS" '{printf "%1.0f\n", (curr / max)*100}')

echo "$ICON_BRIGHT_SUN $BRIGHTNESS_P%"