【WEB開発メモ#1】 CentOS7系にnode.jsとExpress 4をインストールする

yum info nodejs
Loaded plugins: fastestmirror, langpacks
Loading miAvailable Packages
Name : nodejs
Arch : x86_64
Epoch : 1
Version : 6.14.0
Release : 1.el7
Size : 4.6 M
Repo : epel/x86_64
Summary : JavaScript runtime
URL : http://nodejs.org/
License : MIT and ASL 2.0 and ISC and BSD
Description : Node.js is a platform built on Chrome's JavaScript runtime
 : for easily building fast, scalable network applications.
 : Node.js uses an event-driven, non-blocking I/O model that
 : makes it lightweight and efficient, perfect for data-intensive
 : real-time applications that run across distributed devices.rror speeds from cached hostfile

curl -sL https://rpm.nodesource.com/setup_8.x | bash -

yum -y install nodejs

node --version
v8.11.1

npm --version
5.6.0

npm init
This utility will walk you through creating a package.json file.
It only covers the most common items, and tries to guess sensible defaults.

See `npm help json` for definitive documentation on these fields
and exactly what they do.

Use `npm install <pkg>` afterwards to install a package and
save it as a dependency in the package.json file.

Press ^C at any time to quit.
package name: (work)
version: (1.0.0)
description:
entry point: (index.js)
test command:
git repository:
keywords:
author:
license: (ISC)
About to write to /usr/local/share/work/package.json:

{
  "name": "work",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo "Error: no test specified" && exit 1"
  },
  "author": "",
  "license": "ISC"
}

Is this ok? (yes)

npm install --save -g express4
+ express4@0.0.1
added 51 packages in 2.425s

ls /usr/lib/node_modules/
express4  npm

npm install express3
npm WARN deprecated connect@2.30.2: connect 2.x series is deprecated
npm notice created a lockfile as package-lock.json. You should commit this file.
npm WARN work@1.0.0 No description
npm WARN work@1.0.0 No repository field.

+ express3@0.0.0
added 96 packages in 3.448s

npm list  --depth=0
work@1.0.0 /usr/local/share/work
└── express3@0.0.0

npm list  --depth=0 -g
/usr/lib
├── express4@0.0.1
└── npm@5.6.0

ls node_modules/
accepts              cookie-signature  forwarded          morgan           send
base64-url           core-util-is      fresh              ms               serve-favicon
basic-auth           crc               http-errors        multiparty       serve-index
basic-auth-connect   csrf              iconv-lite         negotiator       serve-static
batch                csurf             inherits           on-finished      statuses
body-parser          debug             ipaddr.js          on-headers       stream-counter
bytes                depd              isarray            parseurl         string_decoder
commander            destroy           media-typer        pause            tsscmp
compressible         ee-first          merge-descriptors  proxy-addr       type-is
compression          errorhandler      method-override    qs               uid-safe
connect              escape-html       methods            random-bytes     unpipe
connect-timeout      etag              mime               range-parser     utils-merge
content-disposition  express           mime-db            raw-body         vary
content-type         express3          mime-types         readable-stream  vhost
cookie               express-session   minimist           response-time
cookie-parser        finalhandler      mkdirp             rndm

npm uninstall express3
npm WARN work@1.0.0 No description
npm WARN work@1.0.0 No repository field.

removed 96 packages in 1.136s

npm install -g express-generator
npm WARN work@1.0.0 No description
npm WARN work@1.0.0 No repository field.

+ express-generator@4.16.0
added 10 packages in 0.843s

express first-project

  warning: the default view engine will not be jade in future releases
  warning: use `--view=jade' or `--help' for additional options

   create : first-project/
   create : first-project/public/
   create : first-project/public/javascripts/
   create : first-project/public/images/
   create : first-project/public/stylesheets/
   create : first-project/public/stylesheets/style.css
   create : first-project/routes/
   create : first-project/routes/index.js
   create : first-project/routes/users.js
   create : first-project/views/
   create : first-project/views/error.jade
   create : first-project/views/index.jade
   create : first-project/views/layout.jade
   create : first-project/app.js
   create : first-project/package.json
   create : first-project/bin/
   create : first-project/bin/www

   change directory:
     $ cd first-project

   install dependencies:
     $ npm install

   run the app:
     $ DEBUG=first-project:* npm start

ls
applications  first-project  info  man  work

├── app.js　　//メインとなるjavascriptファイル
├── bin `//サーバ起動に必要な実行ファイル
│   └── www　　
├── package.json 
├── public　//CSSやjs、imageファイルなどの静的コンテンツの配置場所
│   ├── images
│   ├── javascripts
│   └── stylesheets
│       └── style.css
├── routes　//ルーティングされるアプリケーションはここに別記載する
│   ├── index.js
│   └── users.js
└── views　//画面描画用のテンプレート　今回は説明割愛
    ├── error.jade
    ├── index.jade
    └── layout.jade

 npm install
npm WARN deprecated jade@1.11.0: Jade has been renamed to pug, please install the latest version of pug instead of jade
npm WARN deprecated constantinople@3.0.2: Please update to at least constantinople 3.1.1
npm WARN deprecated transformers@2.1.0: Deprecated, use jstransformer
npm notice created a lockfile as package-lock.json. You should commit this file.
added 101 packages in 3.203s

npm start

> first-project@0.0.0 start /usr/local/share/first-project
> node ./bin/www