[Node.js]Express4インストール

express4_install.sh

# add package.json
npm init
vi package.json
#{
#  "name": "nodesample",
#  "version": "1.0.0",
#  "description": ""
#}

# local install express
npm install --save-dev express
# global install express-generator
npm install -g express-generator
# generate express
express package_name
cd package_name
npm install

# start express
npm start