ubuntu 12.04 软件源文件备份

这些天在捣腾虚拟机，用很多官方的ubuntu镜像启动的虚拟机软件源全是国外的，导致执行apt-get update 命令后，更新速度非常慢，又因为没有图形界面，不能用新立得来设置，只能把一个指向国内的源拷贝到虚拟机/etc/apt之下，这里做一下备份，备不时之需。

#

# deb cdrom:[Ubuntu-Server 12.04.1 LTS _Precise Pangolin_ - Release amd64 (20120817.3)]/ dists/precise/main/binary-i386/
# deb cdrom:[Ubuntu-Server 12.04.1 LTS _Precise Pangolin_ - Release amd64 (20120817.3)]/ dists/precise/restricted/binary-i386/
# deb cdrom:[Ubuntu-Server 12.04.1 LTS _Precise Pangolin_ - Release amd64 (20120817.3)]/ precise main restricted

# deb cdrom:[Ubuntu-Server 12.04.1 LTS _Precise Pangolin_ - Release amd64 (20120817.3)]/ dists/precise/main/binary-i386/
# deb cdrom:[Ubuntu-Server 12.04.1 LTS _Precise Pangolin_ - Release amd64 (20120817.3)]/ dists/precise/restricted/binary-i386/
# deb cdrom:[Ubuntu-Server 12.04.1 LTS _Precise Pangolin_ - Release amd64 (20120817.3)]/ 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-security main restricted
deb-src http://cn.archive.ubuntu.com/ubuntu/ precise-security main restricted
deb http://cn.archive.ubuntu.com/ubuntu/ precise-security universe
deb-src http://cn.archive.ubuntu.com/ubuntu/ precise-security universe
deb http://cn.archive.ubuntu.com/ubuntu/ precise-security multiverse
deb-src http://cn.archive.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