Http://wiki.ubuntu.org.cn/Qref/Source
An older version of the update source
Example: 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
Other versions of the Hardy replaced with the corresponding version of the code can be
14.04 Update Source
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
Ubuntu Update Source