Installing Ruby, Jekyll, NodeJS on EC2 instance the easy way

If you are installing Ruby, Rubygems, Jekyll and Node.js on your EC2 instance, it would be best to use RVM (Ruby Version Manager)

$sudo curl -sSL https://get.rvm.io | bash -s stable --ruby=2.1.1
$rvm install 2.1.1
$rvm use 2.1.1

Once you have Ruby installed, you can install Rubygems using rvm

$sudo rvm rubygems latest

After you have install rubygems, you can use "gem install" to install Jekyll

$sudo gem install jekyll

To test whether jekyll was installed successfully, type $jekyll in the terminal to see if you get a help menu.

Next to install Node.js, you can run your OS package manager

$sudo yum install -y nodejs npm

and after installation type $node should take you into node's shell.