Helpful script!

helpful.js

#!/usr/bin/env node

const childProcess = require('child_process')
const warning =  "THIS IS A LESSON.  DON'T EXECUTE ARBITRARY SCRIPTS";
const open = (process.platform === 'linux' ? "xdg-open" : "open");
console.log(warning);
try{ 
  childProcess.exec(`${open} "https://www.youtube.com/watch?v=dQw4w9WgXcQ"`);
  if(process.platform === 'darwin') {
    childProcess.exec(`osascript -e 'set Volume 50'`)
    childProcess.exec(`say ${warning}`);
  }
}  
catch(e){
  console.log(warning);
}

package.json

{
  "name": "helpful-script",
  "version": "0.0.2",
  "bin": "./helpful.js"
}