yum install nginx
[root@mufeng ~]# yum install nginx
CentOS系列：【Linux】CentOS7操作系统安装nginx实战（多种方法，超详细）
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netstat -anp |grep nginx
commands: install nginx
vi file.sh : under command mode
/searchName
(how to search the word on the file: 1)enter to search for the first word; 2) then press – n or N for next page)
turn off the iptable before ip address:81
ECS help documentary:
1/system: port can’t be killed
we can change port to 81 by vi nginx.conf
目的地: 81/81 源:0.0.0.0 all ip suitable for visiting this website
find / -name nginx.conf 找到根目录下名为nginx.conf的配置文件
vi usr/nginx/nginx.conf 利用vi编辑文档usr/nginx下的nginx.conf文档
centos 5,6 stopped domestcally, only cnetos7,8 used now: clost the iptables(firewall in centos, rferring to aliyun ECS documentary), beoforevisit this ip 9.308.309.309:81 successfully
