Node.js CLI 2

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Node.js provides built-in modules like process and readline to handle command-line arguments and user input. You can also use third-party packages like commander or yargs to create more complex CLI applications.

Example using process.argv:

#!/usr/bin/env node

const name = process.argv[2] || "World";
console.log(`Hello, ${name}!`);

Run this with node greet.js Alice to see "Hello, Alice!".