deb http://debian.ustc.edu.cn/ubuntu/ precise main multiverse restricted universe

deb http://debian.ustc.edu.cn/ubuntu/ precise-backports main multiverse restricted universe

deb http://debian.ustc.edu.cn/ubuntu/ precise-proposed main multiverse restricted universe

deb http://debian.ustc.edu.cn/ubuntu/ precise-security main multiverse restricted universe

deb http://debian.ustc.edu.cn/ubuntu/ precise-updates main multiverse restricted universe

deb-src http://debian.ustc.edu.cn/ubuntu/ precise main multiverse restricted universe

deb-src http://debian.ustc.edu.cn/ubuntu/ precise-backports main multiverse restricted universe

deb-src http://debian.ustc.edu.cn/ubuntu/ precise-proposed main multiverse restricted universe

deb-src http://debian.ustc.edu.cn/ubuntu/ precise-security main multiverse restricted universe

deb-src http://debian.ustc.edu.cn/ubuntu/ precise-updates main multiverse restricted universe

#

# deb cdrom:[Ubuntu-Server 12.04.5 LTS _precise Tahr_ - Release amd64 (20160803)]/ precise main restricted

#deb cdrom:[Ubuntu-Server 12.04.5 LTS _precise Tahr_ - Release amd64 (20160803)]/ precise main restricted

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to

# newer versions of the distribution.

deb http://cn.archive.ubuntu.com/ubuntu/ precise main restricted

deb-src http://cn.archive.ubuntu.com/ubuntu/ precise main restricted

## Major bug fix updates produced after the final release of the

## distribution.

deb http://cn.archive.ubuntu.com/ubuntu/ precise-updates main restricted

deb-src http://cn.archive.ubuntu.com/ubuntu/ precise-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu

## team. Also, please note that software in universe WILL NOT receive any

## review or updates from the Ubuntu security team.

deb http://cn.archive.ubuntu.com/ubuntu/ precise universe

deb-src http://cn.archive.ubuntu.com/ubuntu/ precise universe

deb http://cn.archive.ubuntu.com/ubuntu/ precise-updates universe

deb-src http://cn.archive.ubuntu.com/ubuntu/ precise-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu

## team, and may not be under a free licence. Please satisfy yourself as to

## your rights to use the software. Also, please note that software in

## multiverse WILL NOT receive any review or updates from the Ubuntu

## security team.

deb http://cn.archive.ubuntu.com/ubuntu/ precise multiverse

deb-src http://cn.archive.ubuntu.com/ubuntu/ precise multiverse

deb http://cn.archive.ubuntu.com/ubuntu/ precise-updates multiverse

deb-src http://cn.archive.ubuntu.com/ubuntu/ precise-updates multiverse

## N.B. software from this repository may not have been tested as

## extensively as that contained in the main release, although it includes

## newer versions of some applications which may provide useful features.

## Also, please note that software in backports WILL NOT receive any review

## or updates from the Ubuntu security team.

deb http://cn.archive.ubuntu.com/ubuntu/ precise-backports main restricted universe multiverse

deb-src http://cn.archive.ubuntu.com/ubuntu/ precise-backports main restricted universe multiverse

deb http://security.ubuntu.com/ubuntu precise-security main restricted

deb-src http://security.ubuntu.com/ubuntu precise-security main restricted

deb http://security.ubuntu.com/ubuntu precise-security universe

deb-src http://security.ubuntu.com/ubuntu precise-security universe

deb http://security.ubuntu.com/ubuntu precise-security multiverse

deb-src http://security.ubuntu.com/ubuntu precise-security multiverse

## Uncomment the following two lines to add software from Canonical's

## 'partner' repository.

## This software is not part of Ubuntu, but is offered by Canonical and the

## respective vendors as a service to Ubuntu users.

# deb http://archive.canonical.com/ubuntu precise partner

# deb-src http://archive.canonical.com/ubuntu precise partner

## Uncomment the following two lines to add software from Ubuntu's

## 'extras' repository.

## This software is not part of Ubuntu, but is offered by third-party

## developers who want to ship their latest software.

# deb http://extras.ubuntu.com/ubuntu precise main

# deb-src http://extras.ubuntu.com/ubuntu precise main