1. start
/usr/local/nginx/sbin/nginx
2.stop
/usr/local/nginx/sbin/nginx -s stop
2.restart
/usr/local/nginx/sbin/nginx -s reload
3.server block ,like apache vhost
The HTTP-block, the server-block and the location block
更多见:http://blog.martinfjordvald.com/2010/07/nginx-primer/