这几天在虚拟机里折腾一个来自地球的神奇的被叫做 Ubuntu 的操作系统。您瞧，自从有了它，再也听不到微软的叫唤了；牙好、胃口就好，身体倍儿棒，吃嘛嘛香。
而 Ubuntu 的 APT 可以让我等懒人变得更懒。为了在今后可以充分享受懒惰带来的愉悦，找到了几个在杭州电信线路上访问比较快的 APT 源。前者服务器物理位置在江苏电信，速度可以达到 1200Kb/s 以上；后者服务器物理位置在上海电信，速度稳定在 600Kb/s 左右。
相关记录如下：
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak
sudo vi /etc/apt/sources.list
deb http://ubuntu.cn99.com/ubuntu/ feisty main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ feisty-security main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ feisty-updates main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ feisty-proposed main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ feisty-backports main restricted universe multiverse
deb-src http://ubuntu.cn99.com/ubuntu/ feisty main restricted universe multiverse
deb-src http://ubuntu.cn99.com/ubuntu/ feisty-security main restricted universe multiverse
deb-src http://ubuntu.cn99.com/ubuntu/ feisty-updates main restricted universe multiverse
deb-src http://ubuntu.cn99.com/ubuntu/ feisty-proposed main restricted universe multiverse
deb-src http://ubuntu.cn99.com/ubuntu/ feisty-backports main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu-cn/ feisty main multiverse restricted universe
deb http://mirror.rootguide.org/ubuntu/ feisty main restricted universe multiverse
deb-src http://mirror.rootguide.org/ubuntu/ feisty main restricted universe multiverse
deb http://mirror.rootguide.org/ubuntu/ feisty-updates main restricted universe multiverse
deb-src http://mirror.rootguide.org/ubuntu/ feisty-updates main restricted universe multiverse
deb http://mirror.rootguide.org/ubuntu/ feisty-backports main restricted universe multiverse
deb-src http://mirror.rootguide.org/ubuntu/ feisty-backports main restricted universe multiverse
deb http://mirror.rootguide.org/ubuntu/ feisty-security main restricted universe multiverse
deb-src http://mirror.rootguide.org/ubuntu/ feisty-security main restricted universe multiverse
deb http://mirror.rootguide.org/ubuntu/ feisty-proposed main multiverse restricted universe
deb-src http://mirror.rootguide.org/ubuntu/ feisty-proposed main restricted universe multiverse
deb http://mirror.rootguide.org/ubuntu-cn/ feisty main multiverse restricted universe
sudo apt-get update
sudo apt-get dist-upgrade
