UBUNTU EC2 내 초기 express.js 세팅(online)

1. node.js, npm 설치

 

   * https://rpm.nodesource.com/setup_14.x - Node.js v14 LTS "Fermium" (recommended)

curl -sL https://deb.nodesource.com/setup_14.x | sudo -E bash -

 

app-get 이용하여 node.js 설치

sudo apt-get install -y nodejs

app-get update

 

설치된 버전 확인

node -v
npm -v

 

npm 통해 yarn 설치

sudo npm install --global yarn

 

yarn init으로 package.json 생성

yarn init

ubuntu@ip-***-**-**-***:~/app$ sudo yarn init
yarn init v1.22.19
question name (app):
question version (1.0.0):
question description:
question entry point (index.js):
question repository url:
question author:
question license (MIT):
question private:
success Saved package.json

 >> 해당 question에 값 지정 가능, blank시 default값 입력(괄호 내 값)

 >> yarn init이 대체 뭐길래?? (더 ++)

 

mkdir app
touch app.js
vi app.js

 

in app.js

const express = require("express");
const app = express();
const port = 3000;

app.get("/", (req, res) => {
    res.send("Hello World!");
});

app.listen(port, () => {
    console.log(`Example app listening at http://localhost:${port}`);
});

:wq

 

node app.js