Making global commands with NodeJS

I guess you are creating new files using touch command. touch command works anywhere inside your OS. it means it’s a global command. Here I am going to explain how you can register your own global command with NodeJS.

I am going to develop very simple command newhtml that will create new html file with the HTML5 template.

Very first create a new folder newhtml

$ mkdir newhtml
$ cd newhtml

Create package.json

$ npm init

Now I am going to modify the package.json to add my global command

      "name": "newhtml",
      "version": "1.0.0",
      "description": "",
      "main": "index.js",
      "scripts": {
        "test": "echo \"Error: no test specified\" && exit 1"
      "author": "",
      "license": "ISC",
      "bin": {
    	"newhtml": "./bin/newhtml.js"

Now I mentioned that If I enter newhtml command anywhere I need to run the bin/newhtml.js script.

Create bin folder and touch newhtml.js

$ mkdir bin 
$ cd bin 
$ touch newhtml.js

Thereafter we need to store the template in html file. Therefore go back to project folder and create template.html with following content

    <!DOCTYPE html>
    		<meta charset="UTF-8">
    		<title>Title of the document</title>
    		Content of the document......

Now develop the newhtml.js file

    #!/usr/bin/env node
    'use strict';
    var fs = require('fs'); 
    var filename = process.argv[2];
    if(typeof filename == 'undefined'){
    	filename = 'index.html';
    	filename = filename + '.html';
    fs.readFile(__dirname+'/../template.html','utf8', function(err,data){
    	fs.writeFile(process.cwd()+'/'+filename,data,'utf8',function(err, data){
    		console.log(filename+' created.');

Bingo! you did coding. Now We will install this as a global module. Change the directory to your project root and run npm.

$ npm install -g

Go to desktop and enter following commands

$ newhtml myhtmlPage
$ newhtml 

Remove your global command using

$ npm uninstall -g

Happy coding !