秦剑 SEM

sudo cp /etc/apt/sources.list /etc/apt/sources.list-bak编辑sources.listsudo gedit /etc/apt/sources.list在打开的sources.list下，输入源链接进行更新 sudo apt-get update sudo apt-get dist-upgrade源连接地址（参考http://blog.chinaunix.net/u1/42899/showart_335063.html）
Ubuntu.cn99.com 更新服务器(推荐广东电信用户使用。
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 restricted universe multiversedeb http://archive.ubuntu.com/ubuntu/ breezy main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ breezy-security main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ breezy-updates main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ breezy-backports main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu-cn/ breezy main restricted universe multiverse
这里你还可以使用速度也非常快的的mirror.lupaworld.com的源:
deb http://mirror.lupaworld.com/ubuntu/archive/ breezy main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu/archive/ breezy-security main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu/archive/ breezy-updates main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu/archive/ breezy-backports main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu/ubuntu-cn/ breezy main restricted universe multiverse如果是教育网用户请使用上海交通大学的源:
deb http://ftp.sjtu.edu.cn/ubuntu/ breezy main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ breezy-backports main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ breezy-proposed main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ breezy-security main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ breezy-updates main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu-cn/ breezy main multiverse restricted universe bleeding保存编辑好的文件