OS Module in Node.js
From the Node.js Core Modules cheat sheet · Process & OS · verified Jul 2026
OS Module
Get operating system information and utilities
javascript
const os = require('os');
// System info
os.platform(); // 'darwin', 'linux', 'win32'
os.arch(); // 'x64', 'arm'
os.hostname();
os.cpus();
os.totalmem();
os.freemem();
// User info
os.userInfo();
os.homedir();💡 Useful for system monitoring and diagnostics
📌 os.platform() returns darwin, win32, linux
⚡ os.cpus() for CPU info and core count
🟢 Essential for cross-platform apps
🔗 Related: systeminformation for detailed stats
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