1、先備份
sudo cp /etc/apt/sources.list /etc/apt/sources.list.backup (備份下當前的源列表,有備無患嘛)
2、修改更新源
sudo gedit /etc/apt/sources.list (打開Ubuntu 8.04源列表文件)
在最下面加入
deb http://ubuntu.cn99.com/ubuntu/ hardy main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ hardy-security main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ hardy-updates main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ hardy-proposed main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ hardy-backports main restricted universe multiverse
deb-src http://ubuntu.cn99.com/ubuntu/ hardy main restricted universe multiverse
deb-src http://ubuntu.cn99.com/ubuntu/ hardy-security main restricted universe multiverse
deb-src http://ubuntu.cn99.com/ubuntu/ hardy-updates main restricted universe multiverse
deb-src http://ubuntu.cn99.com/ubuntu/ hardy-proposed main restricted universe multiverse
deb-src http://ubuntu.cn99.com/ubuntu/ hardy-backports main restricted universe multiverse
3、通知 ubuntu 8.40 啟用新的更新源
sudo apt-get update