Ubuntu 12.04更新源地址列表更改方法（一劳永逸）

每次升级ubuntu都有更换更新源（gengxinyuan），其实更新源地址不必上网找，直接自己更改就可以了。更新源的地址基本上是这样的：
deb http://ubuntu.srt.cn/ubuntu/ oneiric main universe restricted multiverse

这个是11.10的更新源地址，其中 oneiric就是ubuntu 11.10的开发代号，所以我们只需要将电脑中的更新源列表里的开发代号替换为ubuntu 12.04的开发代号就可以了，用ctrl+F查找出来全部替换就可以了。因此以后再换版本就不用自己上网搜索更新源了。

ubuntu 12.04的开发代号是Precise Pangolin，译为精确的穿山甲。所以只需将oneiric替换为precise即可

1、首先备份Ubuntu 11.10源列表

sudo cp /etc/apt/sources.list /etc/apt/sources.list.backup （备份下当前的源列表，有备无患嘛）

2、修改更新源

sudo gedit /etc/apt/sources.list （打开Ubuntu 11.10源列表文件）

3、用ctrl+F查找所有的oneiric，然后全部替换为precise

4、通知ubuntu启用新的更新源 sudo apt-get update

//当然如果你比较懒，或者是全新安装的ubuntu，那你可以直接把下面的代码复制到sources.list中

#台湾源

deb http://tw.archive.ubuntu.com/ubuntu/ precise main universe restricted multiverse

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

deb http://tw.archive.ubuntu.com/ubuntu/ precise-security universe main multiverse restricted

deb-src http://tw.archive.ubuntu.com/ubuntu/ precise-security universe main multiverse restricted

deb http://tw.archive.ubuntu.com/ubuntu/ precise-updates universe main multiverse restricted

deb-src http://tw.archive.ubuntu.com/ubuntu/ precise-updates universe main multiverse restricted

#网易 Ubuntu 11.10 源（速度很快）

deb http://mirrors.163.com/ubuntu/ precise main universe restricted multiverse

deb-src http://mirrors.163.com/ubuntu/ precise main universe restricted multiverse

deb http://mirrors.163.com/ubuntu/ precise-security universe main multiverse restricted

deb-src http://mirrors.163.com/ubuntu/ precise-security universe main multiverse restricted

deb http://mirrors.163.com/ubuntu/ precise-updates universe main multiverse restricted

deb http://mirrors.163.com/ubuntu/ precise-proposed universe main multiverse restricted

deb-src http://mirrors.163.com/ubuntu/ precise-proposed universe main multiverse restricted

deb http://mirrors.163.com/ubuntu/ precise-backports universe main multiverse restricted

deb-src http://mirrors.163.com/ubuntu/ precise-backports universe main multiverse restricted

deb-src http://mirrors.163.com/ubuntu/ precise-updates universe main multiverse restricted

#骨头源，骨头源是bones7456架设的一个Ubuntu源 ，提供ubuntu,deepin

deb http://ubuntu.srt.cn/ubuntu/ precise main universe restricted multiverse

deb-src http://ubuntu.srt.cn/ubuntu/ precise main universe restricted multiverse

deb http://ubuntu.srt.cn/ubuntu/ precise-security universe main multiverse restricted

deb-src http://ubuntu.srt.cn/ubuntu/ precise-security universe main multiverse restricted

deb http://ubuntu.srt.cn/ubuntu/ precise-updates universe main multiverse restricted

deb http://ubuntu.srt.cn/ubuntu/ precise-proposed universe main multiverse restricted

deb-src http://ubuntu.srt.cn/ubuntu/ precise-proposed universe main multiverse restricted

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

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

deb-src http://ubuntu.srt.cn/ubuntu/ precise-updates universe main multiverse restricted

#mirror.lupaworld.com的源，速度很快

deb http://mirror.lupaworld.com/ubuntu/archive/ precise main restricted universe multiverse

deb http://mirror.lupaworld.com/ubuntu/archive/ precise-security main restricted universe multiverse

deb http://mirror.lupaworld.com/ubuntu/archive/ precise-updates main restricted universe multiverse

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

deb http://mirror.lupaworld.com/ubuntu/ubuntu-cn/ precise main restricted universe multiverse

#ubuntu.cn99.com源（推荐）:

deb http://ubuntu.cn99.com/ubuntu/ precise main restricted universe multiverse

deb http://ubuntu.cn99.com/ubuntu/ precise-updates main restricted universe multiverse

deb http://ubuntu.cn99.com/ubuntu/ precise-security main restricted universe multiverse

deb http://ubuntu.cn99.com/ubuntu/ precise-backports main restricted universe multiverse

deb http://ubuntu.cn99.com/ubuntu-cn/ precise main restricted universe multiverse

//教育网源

如果你是在校大学生，可以使用校园网/教育网，就是用教育网的资源吧，中科大，兰大、厦门大学都有很多资源，尤其是支持ipv6的，那更新速度就按兆算了。

中科大：http://mirrors.ustc.edu.cn/

厦门大学：http://mirrors.xmu.edu.cn/howto/

#电子科技大学

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

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

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

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

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

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

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

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

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

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

#中国科技大学

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

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

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

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

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

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

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

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

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

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

#北京理工大学

deb http://mirror.bjtu.edu.cn/ubuntu/ precise main multiverse restricted universe

deb http://mirror.bjtu.edu.cn/ubuntu/ precise-backports main multiverse restricted universe

deb http://mirror.bjtu.edu.cn/ubuntu/ precise-proposed main multiverse restricted universe

deb http://mirror.bjtu.edu.cn/ubuntu/ precise-security main multiverse restricted universe

deb http://mirror.bjtu.edu.cn/ubuntu/ precise-updates main multiverse restricted universe

deb-src http://mirror.bjtu.edu.cn/ubuntu/ precise main multiverse restricted universe

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

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

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

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

#兰州大学

deb ftp://mirror.lzu.edu.cn/ubuntu/ precise main multiverse restricted universe

deb ftp://mirror.lzu.edu.cn/ubuntu/ precise-backports main multiverse restricted universe

deb ftp://mirror.lzu.edu.cn/ubuntu/ precise-proposed main multiverse restricted universe

deb ftp://mirror.lzu.edu.cn/ubuntu/ precise-security main multiverse restricted universe

deb ftp://mirror.lzu.edu.cn/ubuntu/ precise-updates main multiverse restricted universe

deb ftp://mirror.lzu.edu.cn/ubuntu-cn/ precise main multiverse restricted universe

#上海交通大学

deb http://ftp.sjtu.edu.cn/ubuntu/ precise main multiverse restricted universe

deb http://ftp.sjtu.edu.cn/ubuntu/ precise-backports main multiverse restricted universe

deb http://ftp.sjtu.edu.cn/ubuntu/ precise-proposed main multiverse restricted universe

deb http://ftp.sjtu.edu.cn/ubuntu/ precise-security main multiverse restricted universe

deb http://ftp.sjtu.edu.cn/ubuntu/ precise-updates main multiverse restricted universe

deb http://ftp.sjtu.edu.cn/ubuntu-cn/ precise main multiverse restricted universe

deb-src http://ftp.sjtu.edu.cn/ubuntu/ precise main multiverse restricted universe

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

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

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

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