ubuntu 源地址

小雨点点789

　　第一种方法：
cd /etc/apt/
cat sources.list |sed s/us.archive/cn.archive/g > a.txt
mv sources.list  sources.list.bak  && touch sources.list && cat a.txt > sources.list  &&  rm a.txt -rf  ##更改源为CN速度更快

第二种方法：
#

# deb cdrom:[Ubuntu-Server 11.04 _Natty Narwhal_ - Release amd64 (20110426)]/ natty main restricted

#deb cdrom:[Ubuntu-Server 11.04 _Natty Narwhal_ - Release amd64 (20110426)]/ natty main restricted

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://ubuntu.cn99.com/ubuntu/ natty main restricted
deb-src http://ubuntu.cn99.com/ubuntu/ natty main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://ubuntu.cn99.com/ubuntu/ natty-updates main restricted
deb-src http://ubuntu.cn99.com/ubuntu/ natty-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://ubuntu.cn99.com/ubuntu/ natty universe
deb-src http://ubuntu.cn99.com/ubuntu/ natty universe
deb http://ubuntu.cn99.com/ubuntu/ natty-updates universe
deb-src http://ubuntu.cn99.com/ubuntu/ natty-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://ubuntu.cn99.com/ubuntu/ natty multiverse
deb-src http://ubuntu.cn99.com/ubuntu/ natty multiverse
deb http://ubuntu.cn99.com/ubuntu/ natty-updates multiverse
deb-src http://ubuntu.cn99.com/ubuntu/ natty-updates multiverse

## Uncomment the following two lines to add software from the 'backports'
## repository.
## 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://ubuntu.cn99.com/ubuntu/ natty-backports main restricted universe multiverse
# deb-src http://ubuntu.cn99.com/ubuntu/ natty-backports main restricted universe multiverse

deb http://security.ubuntu.com/ubuntu natty-security main restricted
deb-src http://security.ubuntu.com/ubuntu natty-security main restricted
deb http://security.ubuntu.com/ubuntu natty-security universe
deb-src http://security.ubuntu.com/ubuntu natty-security universe
deb http://security.ubuntu.com/ubuntu natty-security multiverse
deb-src http://security.ubuntu.com/ubuntu natty-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 natty partner
# deb-src http://archive.canonical.com/ubuntu natty 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 natty main
# deb-src http://extras.ubuntu.com/ubuntu natty main
root@class001:~# cat /etc/apt/sources.list |grep deb*
# deb cdrom:[Ubuntu-Server 11.04 _Natty Narwhal_ - Release amd64 (20110426)]/ natty main restricted
#deb cdrom:[Ubuntu-Server 11.04 _Natty Narwhal_ - Release amd64 (20110426)]/ natty main restricted
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
deb http://ubuntu.cn99.com/ubuntu/ natty main restricted
deb-src http://ubuntu.cn99.com/ubuntu/ natty main restricted
deb http://ubuntu.cn99.com/ubuntu/ natty-updates main restricted
deb-src http://ubuntu.cn99.com/ubuntu/ natty-updates main restricted
deb http://ubuntu.cn99.com/ubuntu/ natty universe
deb-src http://ubuntu.cn99.com/ubuntu/ natty universe
deb http://ubuntu.cn99.com/ubuntu/ natty-updates universe
deb-src http://ubuntu.cn99.com/ubuntu/ natty-updates universe
## team, and may not be under a free licence. Please satisfy yourself as to
deb http://ubuntu.cn99.com/ubuntu/ natty multiverse
deb-src http://ubuntu.cn99.com/ubuntu/ natty multiverse
deb http://ubuntu.cn99.com/ubuntu/ natty-updates multiverse
deb-src http://ubuntu.cn99.com/ubuntu/ natty-updates multiverse
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
# deb http://ubuntu.cn99.com/ubuntu/ natty-backports main restricted universe multiverse
# deb-src http://ubuntu.cn99.com/ubuntu/ natty-backports main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu natty-security main restricted
deb-src http://security.ubuntu.com/ubuntu natty-security main restricted
deb http://security.ubuntu.com/ubuntu natty-security universe
deb-src http://security.ubuntu.com/ubuntu natty-security universe
deb http://security.ubuntu.com/ubuntu natty-security multiverse
deb-src http://security.ubuntu.com/ubuntu natty-security multiverse
# deb http://archive.canonical.com/ubuntu natty partner
# deb-src http://archive.canonical.com/ubuntu natty partner
## developers who want to ship their latest software.
# deb http://extras.ubuntu.com/ubuntu natty main
# deb-src http://extras.ubuntu.com/ubuntu natty main