/usr/local/nginx/sbin/nginx -V     #查看版本
nginx version: nginx/1.4.3
built by gcc 4.4.7 20120313 (Red Hat 4.4.7-3) (GCC)
TLS SNI support enabled
configure arguments: --prefix=/usr/local/nginx --user=www --group=www --with-http_stub_status_module --with-http_ssl_module --with-http_flv_module --with-http_gzip_static_module --with-ld-opt='-ljemalloc' #注意这里的编译项

cd lnmp/src
wget http://nginx.org/download/nginx-1.4.4.tar.gz
tar xzf nginx-1.4.4.tar.gz
cd nginx-1.4.4
./configure --prefix=/usr/local/nginx --user=www --group=www --with-http_stub_status_module --with-http_ssl_module --with-http_flv_module --with-http_gzip_static_module --with-ld-opt='-ljemalloc'
make    //注意只make  不要make install
mv /usr/local/nginx/sbin/nginx /usr/local/nginx/sbin/nginx$(date +%m%d)    #备份nginx原文件
cp objs/nginx /usr/local/nginx/sbin/nginx     #复制编译make后的文件覆盖nginx原文件
/usr/local/nginx/sbin/nginx -t     #检测nginx文件配置
kill -USR2 `cat /usr/local/nginx/logs/nginx.pid`    #把nginx.pid改成nginx.pid.oldbin跟着启动新的nginx
kill -QUIT `cat /usr/local/nginx/logs/nginx.pid.oldbin`   #退出旧的nignx