Writing shell scripts can be rather daunting, primarily because the shell isn't the most friendly of languages to use. However, I hope to show you in this tutorial that shell scripting is actually not as tough or as scary as you might expect. For this tutorial, we'll write a script that makes the process of using the Jasmine test framework a little bit easier. Actually, I wouldn't use this script
Newcomers to NodeJS typically find its API difficult to grasp. Luckily, many developers have created frameworks that make it easier to work with Node. Connect is one such framework. It sits on top of Node's API and draws the line between comfort and control. Think of Connect as a stack of middleware. With every request, Connect filters through the layers of middleware, each having the opportunity
There are several firewall applications for Linux, but what you may not realize is that, at the heart of all these programs is a single all-mighty application that is built right into the Linux Kernel: iptables. This is the Linux firewall. No matter which program you use to configure your firewall under Linux, it ultimately all comes down to iptables. All that these other programs do is configure
Today, ECMAScript 6 is in the process of being finalized. ECMAScript is the foundation of JavaScript and, hence, exploring the proposed features today also means that we get a sneak peak at how we will be writing JavaScript in the near future! In this article, we'll explore ten new features, with a significant focus on tools, browsers and transpilers. A Brief History: ECMA, ECMAScript and JavaScri
Slim is a lightweight framework that packs a lot of punch for its tiny footprint. It has an incredible routing system, and offers a solid base to work from without getting in your way. Let me show you! But that's not to say that Slim doesn't has some issues; it's one-file setup becomes cluttered as your application grows. In this article, we'll review how to structure a Slim application to not onl
Meteor is far more than a quick prototyping tool, but it sure is great for prototyping. In this tutorial, we'll walk through the process of turning a simple HTML wireframe into a functional application in a surprisingly simple number of steps. We'll be creating a simple wireframe of a chatroom application. The process we are trying to demonstrate is starting with a pure HTML/CSS wireframe, done in
Backbone is becoming wildly popular as a web application development framework. Along with this popularity comes countless extensions and plugins to enhance the power of the framework, and fill in holes that other felt needed filling. Let's take a look at some of the best choices. Backbone.Marionette Developed by Derick Bailey, this extension is quite large and is my personal favorite. Rather than
Let's build a system for performing functional tests on web applications, using Selenium and PhantomJS. The resulting system will allow us to write easy test scenarios in JavaScript, and test those scenarios both in real browsers and a headless simulator. Choosing Components The obvious downside to Selenium is that it requires a full graphical desktop for any and all tests. To begin, we have to ch
As expected, the console outputs "a", "b", and then 500 ms(ish) later, we see "c", "d", and "e". I use "ish" because setTimeout is actually unpredictable. In fact, even the HTML5 spec talks about this issue: "This API does not guarantee that timers will run exactly on schedule. Delays due to CPU load, other tasks, etc, are to be expected." Interestingly, a timeout will not execute until all of the
Coding, especially in a professional setting, isn't always a solitary activity. Most of the time, you'll be part of a team of software developers, testers, and other professionals. Now imagine working remotely with a team of software developers and facing challenges of task assignment, code reviews, task submission, and project management. How can you resolve these difficulties to improve team com
You might believe that web developers who use Windows as their primary OS have it easy, when testing Internet Explorer; simply click on the blue "E" and go to town. That might be true if they only had to worry about the version of IE on their PC, but we all know that's not the case. Depending on your project's needs, you may need to ensure compatibility from IE6 through IE10, which certainly poses
You're already using source control for managing your code, right? You might even be using your SCM as the central piece of your workflow, like we do at New Relic. In this article, we're not going to review the basics of source control management, regardless of which one you use. Let's just assume that you already know how to get around. What we are going to cover is how the pros use git. We'll ta
Single page web applications - or SPAs, as they are commonly referred to - are quickly becoming the de facto standard for web app development. The fact that a major part of the app runs inside a single web page makes it very interesting and appealing, and the accelerated growth of browser capabilities pushes us closer to the day, when all apps run entirely in the browser. Technically, most web pag
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