Ubuntu修改apt-get镜像地址提高下载速度

1. 获取“源列表”

   http://wiki.ubuntu.org.cn/源列表

2. 修改Ubuntu源列表操作

   查看Ubuntu

   sudo lsb_release -a

   返回结果 我的版本是12.04

   No LSB modules are available.
   Distributor ID: Ubuntu 
   Description:    Ubuntu 12.04.5 LTS 
   Release:    12.04     //版本信息 
   Codename:   precise 
   

   然后找对应版本的源列表

   备份源列表

   sudo cp /etc/apt/sources.list /etc/apt/sources.list_bak

   编辑源列表

   sudo vim /etc/apt/sources.list

   vim编辑 - 删除全部内容

   :%d

   杭州的可以将以下内容复制到vim编辑框中，请他的可以去源列表中找离自己附近的源

   deb http://mirrors.163.com/ubuntu/ precise main restricted universe multiverse
   deb http://mirrors.163.com/ubuntu/ precise-security main restricted universe multiverse
   deb http://mirrors.163.com/ubuntu/ precise-updates main restricted universe multiverse
   deb http://mirrors.163.com/ubuntu/ precise-proposed main restricted universe multiverse
   deb http://mirrors.163.com/ubuntu/ precise-backports main restricted universe multiverse
   deb-src http://mirrors.163.com/ubuntu/ precise main restricted universe multiverse
   deb-src http://mirrors.163.com/ubuntu/ precise-security main restricted universe multiverse
   deb-src http://mirrors.163.com/ubuntu/ precise-updates main restricted universe multiverse
   deb-src http://mirrors.163.com/ubuntu/ precise-proposed main restricted universe multiverse
   deb-src http://mirrors.163.com/ubuntu/ precise-backports main restricted universe multiverse
   

   vim编辑 - 保存并关闭文件

   :wq

   更新源

   sudo apt-get update

结束