Ubuntuでnode.jsインストール

参照ページ：
https://github.com/joyent/node/wiki/Installing-Node.js-via-package-manager

インストール手順：

sudo apt-get update
sudo apt-get install python-software-properties python g++ make
sudo add-apt-repository ppa:chris-lea/node.js
sudo apt-get update
sudo apt-get install nodejs

Expressインストール（MVC）
sudo npm install express -g
express --version
3.4.0

インストール先：
/usr/lib/nodejs
/usr/lib/node_modules

Expressでサンプルサイトsite1を作る

$express site1
   create : site1
   create : site1/package.json
   create : site1/app.js
   create : site1/public
   create : site1/public/javascripts
   create : site1/public/stylesheets
   create : site1/public/stylesheets/style.css
   create : site1/routes
   create : site1/routes/index.js
   create : site1/routes/user.js
   create : site1/views
   create : site1/views/layout.jade
   create : site1/views/index.jade
   create : site1/public/images

   install dependencies:
     $ cd site1 && npm install

   run the app:
     $ node app

$cd site1
$sudo npm install -d
$node app.js
Express server listening on port 3000

LESSインストール

$cd site1
$nano package.json
...
{
  "name": "application-name",
  "version": "0.0.1",
  "private": true,
  "scripts": {
    "start": "node app.js"
  },
  "dependencies": {
    "express": "3.4.0",
    "jade": "*",
    "less-middleware": "*"
  }
}
...

$nano app.js
...
var express = require('express');
var routes = require('./routes');
var user = require('./routes/user');
var http = require('http');
var path = require('path');

var app = express();

// all environments
app.set('port', process.env.PORT || 3000);
app.set('views', __dirname + '/views');
app.set('view engine', 'jade');
app.use(express.favicon());
app.use(express.logger('dev'));
app.use(express.bodyParser());
app.use(express.methodOverride());
app.use(app.router);
app.use(require('less-middleware')({
  src:__dirname + '/public',
  compress:true
}));
app.use(express.static(path.join(__dirname, 'public')));

// development only
if ('development' == app.get('env')) {
  app.use(express.errorHandler());
}

app.get('/', routes.index);
app.get('/users', user.list);

http.createServer(app).listen(app.get('port'), function(){
  console.log('Express server listening on port ' + app.get('port'));
});
...

$sudo npm install -d
$nano public/stylesheets/style.less
...
h1 {font-size:200px;}
...
#public/stylesheets/style.cssは自動的に作成される