1. 下载：请到官方网站http://nginx.org/或者直接点击链接http://nginx.org/download/nginx-0.8.43.tar.gz
2. 解压：tar jxvf nginx-*
3. 进入文件目录，运行以下命令：
   1）./configure
   2）make
   3）sudo make install
   命令1为安装程序自动配置环境，命令2为编译源程序，命令3为安装
4. 完成后  Nginx基本就安装好了，默认安装在/usr/local/nginx，可以在.configure --prefix=设置安装目录中。
   注(mac)：这个是隐藏目录，Finder中是直接看不到的，要在Finder中点击前往－前往文件夹，然后输入/usr才能进入。
5. 输入以下命令启动Nginx，然后浏览器输入地址http://localhost进行测试，看到很大的字体的Welcome to nginx!就代表安装成功了
   /usr/local/nginx/sbin/nginx

注：默认./configure后的配置结果为：

Configuration summary
  + using system PCRE library
  + OpenSSL library is not used
  + md5: using system crypto library
  + sha1 library is not used
  + using system zlib library

  nginx path prefix: "/usr/local/nginx"
  nginx binary file: "/usr/local/nginx/sbin/nginx"
  nginx configuration prefix: "/usr/local/nginx/conf"
  nginx configuration file: "/usr/local/nginx/conf/nginx.conf"
  nginx pid file: "/usr/local/nginx/logs/nginx.pid"
  nginx error log file: "/usr/local/nginx/logs/error.log"
  nginx http access log file: "/usr/local/nginx/logs/access.log"
  nginx http client request body temporary files: "client_body_temp"
  nginx http proxy temporary files: "proxy_temp"
  nginx http fastcgi temporary files: "fastcgi_temp"
  nginx http uwsgi temporary files: "uwsgi_temp"
  nginx http scgi temporary files: "scgi_temp"

1. ./configure: error: the HTTP rewrite module requires the PCRE library.
   解释：http rewrite模块需要PCRE资源库支持
   解决：安装pcre-devel
   yum install pcre-devel
2. ./configure: error: the HTTP cache module requires md5 functions from OpenSSL library.
   解释：http缓存模块需要OpenSSL资源库内的md5方法支持
   解决：安装openssl openssl-devel
   yum install openssl openssl-devel