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#!/bin/node
const fs = require('fs')
const { exec } = require("child_process");
let device = "intel_backlight";
brightnessFile = `/sys/class/backlight/${device}/brightness`;
maxBrightnessFile = `/sys/class/backlight/${device}/max_brightness`;
maxValue = parseInt(fs.readFileSync(maxBrightnessFile, 'utf8'));
fs.watch(brightnessFile, () => {
value = parseInt(fs.readFileSync(brightnessFile, 'utf8'));
console.log(Math.round(value / maxValue * 100));
})
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