Express works both as a Node module and as a command-line executable. When we run express from the command line it generates a project skeleton for us, accelerating the preparation process.
We need to install express using the -g flag (install globally) in order to run the express executable from any directory.
sudo npm -g install express
We use sudo to ensure we get permission to install globally. This doesn't apply under Windows.
First, we decide upon the name of our app. Let's call it nca (Node Cookbook App) and simply do:
express nca
This will generate all of our project files under a new directory called nca. Before we can run our app, we must ensure that all dependencies are installed. We can find app dependencies in nca/package.json:
{
"name": "application-name"
, "version": "0.0.1"
, "private": true
, "dependencies": {
"express": "2.5.8"
, "jade": ">= 0.0.1"
}
}
For portability, it's important to have relevant modules...