example.js

#!/usr/bin/env node

const colors = require('colors/safe');
const readlineSync = require('readline-sync');
const execsync = require('child_process').execSync;
const fs = require('fs');

console.log('This is like Echo in the command prompt');

// npm install colors/safe --save
console.log(colors.yellow('colours work like this'))

// fs has alot of methods but this is one I found useful
// Check to see if /usr/bin/oc exists if not create it
if (!fs.existsSync('/usr/bin/oc')) {
  //execSync can be used to execute any os command
  execsync('sudo touch /usr/bin/oc');
}

// setting up a prompt for user interface 
// npm install readline-sync --save
const result = readlineSync.question(colors.blue('Do you wish to do something else yes/no ? '));
  if (result === 'yes' || result === 'y') {
    // add your logic here
  }