一、查看Nginx版本
nginx -v
显示“-bash: nginx: 未找到命令”表示未安装
二、安装Nginx
yum -y install nginx
三、启动服务
systemctl start nginx.service
四、开机启动
systemctl enable nginx.service
五、常用命令
服务状态：systemctl status nginx.service
启动服务：systemctl start nginx.service
停止服务：systemctl stop nginx.service
重启服务：systemctl restart nginx.service
开机启动：systemctl enable nginx.service