关于Ubuntu12源列表的更改-source list

最新的Source.list源[url]：
最新网易的Source.list源：

deb http://mirrors.163.com/ubuntu/lucid main universe restricted multiverse
deb http://mirrors.163.com/ubuntu/lucid-security universe main multiverse restricted
deb http://mirrors.163.com/ubuntu/lucid-updates universe main multiverse restricted
deb http://mirrors.163.com/ubuntu/lucid-proposed universe main multiverse restricted
deb http://mirrors.163.com/ubuntu/lucid-backports universe main multiverse restricted
deb-src http://mirrors.163.com/ubuntu/lucid main universe restricted multiverse
deb-src http://mirrors.163.com/ubuntu/lucid-security universe main multiverse restricted
deb-src http://mirrors.163.com/ubuntu/lucid-updates universe main multiverse restricted
deb-src http://mirrors.163.com/ubuntu/lucid-proposed universe main multiverse restricted
deb-src http://mirrors.163.com/ubuntu/ lucid-backports universe main multiverse
restricted

deb http://cn.archive.ubuntu.com/ubuntu/ precise main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu/ precise-security main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu/ precise-updates main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu/ precise-backports main restricted universe multiverse
##测试版源
deb http://cn.archive.ubuntu.com/ubuntu/ precise-proposed main restricted universe multiverse
# 源码
deb-src http://cn.archive.ubuntu.com/ubuntu/ precise main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu/ precise-security main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu/ precise-updates main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu/ precise-backports main restricted universe multiverse
##测试版源
deb-src http://cn.archive.ubuntu.com/ubuntu/ precise-proposed main restricted universe multiverse
# Canonical 合作伙伴和附加
deb http://archive.canonical.com/ubuntu/ precise partner
deb http://extras.ubuntu.com/ubuntu/ precise main

再通过apt-get update更新即可（注意需要root权限）。

【初次新装系统的ubuntu用户，需要先切换并设置root用户的密码，在该普通ubuntu用户下使用命令sudo passwd root进行设置即可】

或者登陆：http://wiki.ubuntu.org.cn/%E6%BA%90%E5%88%97%E8%A1%A8

然后选择其他的源，例如 阿里云 ，也可以。