nginx 升级，nginx平滑升级

cd ~ ; wget -q http://nginx.org/download/nginx-1.4.4.tar.gz ; tar xzf nginx-1.4.4.tar.gz ; cd nginx-1.4.4 ; ./configure  --with-http_realip_module --with-http_stub_status_module ; make ; /usr/local/nginx/sbin/nginx -v ; rm -f /usr/local/nginx/sbin/nginx.old ; mv /usr/local/nginx/sbin/nginx /usr/local/nginx/sbin/nginx.old ; cp objs/nginx /usr/local/nginx/sbin/nginx ; /usr/local/nginx/sbin/nginx -v; (/usr/local/nginx/sbin/nginx -t) && (make upgrade)