brew install nginx

Docroot is: /usr/local/var/www
The default port has been set in /usr/local/etc/nginx/nginx.conf to 8080 so that
nginx can run without sudo.
nginx will load all files in /usr/local/etc/nginx/servers/.
To have launchd start nginx now and restart at login:
  brew services start nginx
Or, if you don't want/need a background service you can just run:
  nginx

brew services start nginx

nginx -t

nginx: [emerg] open() "/usr/local/var/run/nginx.pid" failed (13: Permission denied)

sudo chown -R $(whoami)  /usr/local/var/run  # 具体路径参考报错提示中的路径

brew services stop nginx   # 停止
brew services start nginx   # 启动

Welcome to nginx!
If you see this page, the nginx web server is successfully installed and working. Further configuration is required.
For online documentation and support please refer to nginx.org.
Commercial support is available at nginx.com.
Thank you for using nginx.

<h1>hello nginx! 2018-07-10</h1>

user  nobody;
worker_processes  1;
events {
    worker_connections  1024;
}
http {
    include       mime.types;
    default_type  application/octet-stream;
    sendfile        on;
    keepalive_timeout  65;
    client_max_body_size 20M;
    include conf.d/*.conf;
}