33-cli-args

Lesson 33: Command-line arguments

Read args passed to your script.

What you'll learn

• process.argv is an array: [node, script, ...args]
• slice off the first two: process.argv.slice(2)
• parse flags manually or with a library (yargs, commander)
• process.exit(code) to end with a status

Example

See examples/.

Exercise

Build a CLI greeter that reads a --name flag.