ubantu软件源更新的问题

1.sudo  gedit /etc/apt/sources.list

2./sources.list文件后再执行sudo apt-get update 后就成功了，先贴上10.04上的source.list内容，如需要，直接替换即可

# deb cdrom:[Ubuntu 10.04.3 LTS _Lucid Lynx_ - Release amd64 (20110720.1)]/ lucid 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/ lucid main restricteddeb-src http://cn.archive.ubuntu.com/ubuntu/ lucid main restricted## Major bug fix updates produced after the final release of the## distribution.## 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/ lucid universedeb-src http://cn.archive.ubuntu.com/ubuntu/ lucid 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/ lucid multiversedeb-src http://cn.archive.ubuntu.com/ubuntu/ lucid 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://cn.archive.ubuntu.com/ubuntu/ lucid-backports main restricted universe multiverse# deb-src http://cn.archive.ubuntu.com/ubuntu/ lucid-backports main restricted universe 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 lucid partner# deb-src http://archive.canonical.com/ubuntu lucid partnerdeb http://archive.canonical.com/ lucid partnerdeb-src http://archive.canonical.com/ lucid partnerdeb http://archive.canonical.com/ubuntu lucid partnerdeb-src http://archive.canonical.com/ubuntu lucid partnerdeb http://archive.canonical.com/ lucid partnerdeb http://security.ubuntu.com/ubuntu/ lucid-security restricted main multiverse universe