#!/bin/sh cur="$(brightnessctl g 2>/dev/null)" max="$(brightnessctl m 2>/dev/null)" [ -n "$cur" ] || exit 0 [ -n "$max" ] || exit 0 [ "$max" -gt 0 ] || exit 0 pct=$((100 * cur / max)) echo "BL ${pct}%" echo "BL ${pct}%" echo "#6daeea"