http://wiki.ubuntu.org.cn/Qref/Source
一 老版本的更新源
如: 8.04
deb http://old-releases.ubuntu.com/ubuntu/ hardy main restricted universe multiverse
deb-src http://old-releases.ubuntu.com/ubuntu/ hardy main restricted universe multiverse
deb http://old-releases.ubuntu.com/ubuntu/ hardy-security main restricted universe multiverse
deb-src http://old-releases.ubuntu.com/ubuntu/ hardy-security main restricted universe multiverse
deb http://old-releases.ubuntu.com/ubuntu/ hardy-updates main restricted universe multiverse
deb-src http://old-releases.ubuntu.com/ubuntu/ hardy-updates main restricted universe multiverse
deb http://old-releases.ubuntu.com/ubuntu/ hardy-proposed main restricted universe multiverse
deb-src http://old-releases.ubuntu.com/ubuntu/ hardy-proposed main restricted universe multiverse
deb http://old-releases.ubuntu.com/ubuntu/ hardy-backports main restricted universe multiverse
deb-src http://old-releases.ubuntu.com/ubuntu/ hardy-backports main restricted universe multiverse
其他版本的把hardy替换成对应版本的 代号即可
二 14.04 更新源
deb http://mirrors.163.com/ubuntu/ trusty main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ trusty-security main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ trusty-updates main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ trusty-proposed main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ trusty-backports main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty-security main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty-updates main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty-proposed main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty-backports main restricted universe multiverse