xiangjian

TCP端口
nc -w 1 127.0.0.1 53 && echo true || echo false

UDP端口:
nc -w 1 -u 127.0.0.1 53 && echo true || echo false

xiangjian

$ yum install bison gettext glib2 freetype fontconfig libpng libpng-devel libX11 libX11-devel glib2-devel libgdi* libexif glibc-devel urw-fonts java unzip gcc gcc-c++ automake autoconf libtool make bzip2 wget

$ cd /usr/local/src 

$ wget http://download.mono-project.com/sources/mono/mono-3.2.8.tar.bz2

$ tar jxf mono-3.2.8.tar.bz2

$ cd mono-3.2.8

xiangjian

package main

import (
    "log"
    "net/http"
)

func redirect(w http.ResponseWriter, r *http.Request) {

    http.Redirect(w, r, "http://www.google.com", 301)