官网当前最稳定的的版本是1.6.1，本教程以1.6.1为例：
1，RedHat和CentOS可以设置rpm源，
RHEL 5：http://nginx.org/packages/rhel/5/noarch/RPMS/nginx-release-rhel-5-0.el5.ngx.noarch.rpm
RHEL 6：http://nginx.org/packages/rhel/6/noarch/RPMS/nginx-release-rhel-6-0.el6.ngx.noarch.rpm
RHEL 7：http://nginx.org/packages/rhel/7/noarch/RPMS/nginx-release-rhel-7-0.el7.ngx.noarch.rpm
CentOS 5：http://nginx.org/packages/centos/5/noarch/RPMS/nginx-release-centos-5-0.el5.ngx.noarch.rpm
CentOS 6：http://nginx.org/packages/centos/6/noarch/RPMS/nginx-release-centos-6-0.el6.ngx.noarch.rpm
CentOS 7：http://nginx.org/packages/centos/7/noarch/RPMS/nginx-release-centos-7-0.el7.ngx.noarch.rpm
下载然后安装上面的文件
运行命令 yum install nginx
debian和Ubuntu可以配置如下源
deb http://nginx.org/packages/debian/ codename nginx
deb-src http://nginx.org/packages/debian/ codename nginx
或
deb http://nginx.org/packages/ubuntu/ codename nginx
deb-src http://nginx.org/packages/ubuntu/ codename nginx
运行
apt-get update
apt-get install nginx
2,源码编译
http://nginx.org/en/download.html 下载nginx1.6.1
./configure
--sbin-path=/usr/local/nginx/nginx
--conf-path=/usr/local/nginx/nginx.conf
--pid-path=/usr/local/nginx/nginx.pid
--with-http_ssl_module
make
make install
中途可能有依赖关系，可以根据提示安装相关依赖
更多安装信息参考 http://nginx.org/en/docs/configure.html