JavaScript is everywhere. From its birthplace in the Netscape browser in the mid-nineties, it’s made its way into all modern web browsers, onto mobile phones, and into electronics to make full-fledged web applications on the server-side with Node.js.

Node.js is non-blocking, which means it’s ideal for creating real-time web applications such as chat servers, analytics, collaboration tools, and interactive games.

In order to create such applications, you need NPM a package manager for Node. It allows you to download and installed open source JavaScript libraries that help you make awesome applications.

Prerequisites

  • You should have some familiarity with the Linux terminal since you’ll need to use it to install and test Node and NPM. You’ll also need the terminal to use Node.js and NPM.
  • Dependencies. You need to install a number of dependancies before you can install Node.js and NPM.
    1. Ruby and GCC. You’ll need Ruby 1.8.6 or newer and GCC 4.2 or newer.
      • For Ubuntu or Debian-based Linux distributions, run the following command in your terminal: sudo apt-get install build-essential curl git m4 ruby texinfo libbz2-dev libcurl4-openssl-dev libexpat-dev libncurses-dev zlib1g-dev Then select Y to continue and wait for the packages to be installed.
      • For Fedora based Linux distributions run the following command in your terminal application: sudo yum groupinstall 'Development Tools' && sudo yum install curl git m4 ruby texinfo bzip2-devel curl-devel expat-devel ncurses-devel zlib-devel Then select Y to continue and wait for the packages to be installed.
    2. Homebrew. Homebrew is a package manager originally for the Mac, but it’s been ported to Linux as Linuxbrew, making installing most open-source software (like Node) as simple as writing: brew install node You can learn more about Homebrew at the Homebrew website and Linuxbrew at the Linuxbrew website. To install Homebrew for Linux, open your terminal application and paste in the command: ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/linuxbrew/go/install)" Follow the instructions in the terminal to complete the installation process.

Once Linuxbrew is installed, you’ll need add the following 3 lines to your .bashrc or .zshrc file:

  export PATH="$HOME/.linuxbrew/bin:$PATH"
  export MANPATH="$HOME/.linuxbrew/share/man:$MANPATH"
  export INFOPATH="$HOME/.linuxbrew/share/info:$INFOPATH"

Why Homebrew/Linuxbrew?

You may be asking why you should use a third-party package manager. Here are some advantages:

  • Can install software to a home directory and so does not require sudo
  • Install software not packaged by the native distribution
  • Install up-to-date versions of software when the native distribution is old
  • Use the same package manager to manage both your Mac and Linux machines

Installation

Installing Node.js and NPM is pretty straightforward using Linuxbrew, the Linux port of Homebrew. It handles downloading, unpacking, compiling, and installing Node and NPM on your system. After you have Linuxbrew installed, the whole process should only take you a few minutes.

  1. Open up your terminal and type brew install node.
  2. Sit back and wait. Homebrew has to download some files, compile and install them. But that’s it.

Testing it out.

Make sure you have Node and NPM installed by running simple commands to see what version of each is installed:

  • Test Node.js. To see if Node.js is installed, type node -v in the terminal. This should print the version number, so you’ll see something like this: v0.10.35.
  • Test NPM. To see if NPM is installed, type npm -v in the terminal. This should print the version number, so you’ll see something like this: 2.1.17

node-install-check

How to Update Node and NPM

New versions of Node and NPM are released frequently. You can use Homebrew to update the software it installs.

  1. Make sure Homebrew has the latest version of the Node package. In Terminal type:
    brew update
  2. Upgrade Node: brew upgrade node

How to Uninstall Node and NPM

You can also use Homebrew to uninstall packages that it installed:

brew uninstall node

Other Platforms

Thanks to Dave McFarland, as he wrote some installation guides to install Node.js and NPM on Mac (which this guide heavily borrows from) and Windows.

Conclusion

Now that you have Node.js and NPM installed, you can build an awesome application with Node.js, or use one of the Node packages like Grunt or Gulp to improve your front-end workflow.


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