express

apt install node-express-generator
npm install -g express-generator
npm -g install express
express -V

错误:在项目目录执行 npm install express 或 npm link express

npm -g install serve-index
npm -g install socket.io
npm install -g forever

运维
npm i pm2 -g
pm2 init
pm2 start ecosystem.config.js

pm2 list
pm2 restart xxxx
pm2 log