Lesson 12 / 28

The os Module

Query the machine Node is running on.

System info

Useful for logging, diagnostics, or scaling decisions (e.g. worker count).

import os from "node:os";

console.log(os.platform());     // 'linux'
console.log(os.cpus().length);  // number of cores
console.log(os.totalmem());     // bytes
console.log(os.homedir());