ubuntu配置软件镜像源（提升下载速度）

ubuntu用户都清楚，更新下载速度超慢，但是你可以配置国内的镜像源，就可以将速度提升至几百K。废话不多说。

首先，备份一下ubuntu 12.10 原来的源地址列表文件

sudo cp /etc/apt/sources.list /etc/apt/sources.list.old

然后进行修改

sudo gedit /etc/apt/sources.list

可以在里面添加资源地址，我是直接覆盖掉原来的。
下面是网上找到的一些较好的源，有大型网站的，也有教育网的，可以根据自己的情况添加两三个即可。
#网易的源（163源，无论是不是教育网，速度都很快）
deb http://mirrors.163.com/ubuntu/ quantal main universe restricted multiverse
deb-src http://mirrors.163.com/ubuntu/ quantal main universe restricted multiverse
deb http://mirrors.163.com/ubuntu/ quantal-security universe main multiverse restricted
deb-src http://mirrors.163.com/ubuntu/ quantal-security universe main multiverse restricted
deb http://mirrors.163.com/ubuntu/ quantal-updates universe main multiverse restricted
deb http://mirrors.163.com/ubuntu/ quantal-proposed universe main multiverse restricted
deb-src http://mirrors.163.com/ubuntu/ quantal-proposed universe main multiverse restricted
deb http://mirrors.163.com/ubuntu/ quantal-backports universe main multiverse restricted
deb-src http://mirrors.163.com/ubuntu/ quantal-backports universe main multiverse restricted
deb-src http://mirrors.163.com/ubuntu/ quantal-updates universe main multiverse restricted
#搜狐的源（sohu 源今天还没有更新，不过应该快了）
deb http://mirrors.sohu.com/ubuntu/ quantal main restricted
deb-src http://mirrors.sohu.com/ubuntu/ quantal main restricted
deb http://mirrors.sohu.com/ubuntu/ quantal-updates main restricted
deb-src http://mirrors.sohu.com/ubuntu/ quantal-updates main restricted
deb http://mirrors.sohu.com/ubuntu/ quantal universe
deb-src http://mirrors.sohu.com/ubuntu/ quantal universe
deb http://mirrors.sohu.com/ubuntu/ quantal-updates universe
deb-src http://mirrors.sohu.com/ubuntu/ quantal-updates universe
deb http://mirrors.sohu.com/ubuntu/ quantal multiverse
deb-src http://mirrors.sohu.com/ubuntu/ quantal multiverse
deb http://mirrors.sohu.com/ubuntu/ quantal-updates multiverse
deb-src http://mirrors.sohu.com/ubuntu/ quantal-updates multiverse
deb http://mirrors.sohu.com/ubuntu/ quantal-backports main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ quantal-backports main restricted universe multiverse
deb http://mirrors.sohu.com/ubuntu/ quantal-security main restricted
deb-src http://mirrors.sohu.com/ubuntu/ quantal-security main restricted
deb http://mirrors.sohu.com/ubuntu/ quantal-security universe
deb-src http://mirrors.sohu.com/ubuntu/ quantal-security universe
deb http://mirrors.sohu.com/ubuntu/ quantal-security multiverse
deb-src http://mirrors.sohu.com/ubuntu/ quantal-security multiverse
deb http://extras.ubuntu.com/ubuntu quantal main
deb-src http://extras.ubuntu.com/ubuntu quantal main
#台湾源（台湾的ubuntu 更新源还是很给力的）
deb http://tw.archive.ubuntu.com/ubuntu/ quantal main universe restricted multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu/ quantal main universe restricted multiverse
deb http://tw.archive.ubuntu.com/ubuntu/ quantal-security universe main multiverse restricted
deb-src http://tw.archive.ubuntu.com/ubuntu/ quantal-security universe main multiverse restricted
deb http://tw.archive.ubuntu.com/ubuntu/ quantal-updates universe main multiverse restricted
deb-src http://tw.archive.ubuntu.com/ubuntu/ quantal-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/ quantal main universe restricted multiverse
deb-src http://ubuntu.srt.cn/ubuntu/ quantal main universe restricted multiverse
deb http://ubuntu.srt.cn/ubuntu/ quantal-security universe main multiverse restricted
deb-src http://ubuntu.srt.cn/ubuntu/ quantal-security universe main multiverse restricted
deb http://ubuntu.srt.cn/ubuntu/ quantal-updates universe main multiverse restricted
deb http://ubuntu.srt.cn/ubuntu/ quantal-proposed universe main multiverse restricted
deb-src http://ubuntu.srt.cn/ubuntu/ quantal-proposed universe main multiverse restricted
deb http://ubuntu.srt.cn/ubuntu/ quantal-backports universe main multiverse restricted
deb-src http://ubuntu.srt.cn/ubuntu/ quantal-backports universe main multiverse restricted
deb-src http://ubuntu.srt.cn/ubuntu/ quantal-updates universe main multiverse restricted
#mirror.lupaworld.com的源，速度很快
deb http://mirror.lupaworld.com/ubuntu/archive/ quantal main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu/archive/ quantal-security main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu/archive/ quantal-updates main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu/archive/ quantal-backports main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu/ubuntu-cn/ quantal main restricted universe multiverse
#ubuntu.cn99.com源（推荐）:
deb http://ubuntu.cn99.com/ubuntu/ quantal main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ quantal-updates main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ quantal-security main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ quantal-backports main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu-cn/ quantal main restricted universe multiverse
#教育网源
#电子科技大学
deb http://ubuntu.uestc.edu.cn/ubuntu/ quantal main restricted universe multiverse
deb http://ubuntu.uestc.edu.cn/ubuntu/ quantal-backports main restricted universe multiverse
deb http://ubuntu.uestc.edu.cn/ubuntu/ quantal-proposed main restricted universe multiverse
deb http://ubuntu.uestc.edu.cn/ubuntu/ quantal-security main restricted universe multiverse
deb http://ubuntu.uestc.edu.cn/ubuntu/ quantal-updates main restricted universe multiverse
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ quantal main restricted universe multiverse
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ quantal-backports main restricted universe multiverse
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ quantal-proposed main restricted universe multiverse
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ quantal-security main restricted universe multiverse
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ quantal-updates main restricted universe multiverse
#中国科技大学
deb http://debian.ustc.edu.cn/ubuntu/ quantal main restricted universe multiverse
deb http://debian.ustc.edu.cn/ubuntu/ quantal-backports restricted universe multiverse
deb http://debian.ustc.edu.cn/ubuntu/ quantal-proposed main restricted universe multiverse
deb http://debian.ustc.edu.cn/ubuntu/ quantal-security main restricted universe multiverse
deb http://debian.ustc.edu.cn/ubuntu/ quantal-updates main restricted universe multiverse
deb-src http://debian.ustc.edu.cn/ubuntu/ quantal main restricted universe multiverse
deb-src http://debian.ustc.edu.cn/ubuntu/ quantal-backports main restricted universe multiverse
deb-src http://debian.ustc.edu.cn/ubuntu/ quantal-proposed main restricted universe multiverse
deb-src http://debian.ustc.edu.cn/ubuntu/ quantal-security main restricted universe multiverse
deb-src http://debian.ustc.edu.cn/ubuntu/ quantal-updates main restricted universe multiverse
#北京理工大学
deb http://mirror.bjtu.edu.cn/ubuntu/ quantal main multiverse restricted universe
deb http://mirror.bjtu.edu.cn/ubuntu/ quantal-backports main multiverse restricted universe
deb http://mirror.bjtu.edu.cn/ubuntu/ quantal-proposed main multiverse restricted universe
deb http://mirror.bjtu.edu.cn/ubuntu/ quantal-security main multiverse restricted universe
deb http://mirror.bjtu.edu.cn/ubuntu/ quantal-updates main multiverse restricted universe
deb-src http://mirror.bjtu.edu.cn/ubuntu/ quantal main multiverse restricted universe
deb-src http://mirror.bjtu.edu.cn/ubuntu/ quantal-backports main multiverse restricted universe
deb-src http://mirror.bjtu.edu.cn/ubuntu/ quantal-proposed main multiverse restricted universe
deb-src http://mirror.bjtu.edu.cn/ubuntu/ quantal-security main multiverse restricted universe
deb-src http://mirror.bjtu.edu.cn/ubuntu/ quantal-updates main multiverse restricted universe
#兰州大学
deb ftp://mirror.lzu.edu.cn/ubuntu/ quantal main multiverse restricted universe
deb ftp://mirror.lzu.edu.cn/ubuntu/ quantal-backports main multiverse restricted universe
deb ftp://mirror.lzu.edu.cn/ubuntu/ quantal-proposed main multiverse restricted universe
deb ftp://mirror.lzu.edu.cn/ubuntu/ quantal-security main multiverse restricted universe
deb ftp://mirror.lzu.edu.cn/ubuntu/ quantal-updates main multiverse restricted universe
deb ftp://mirror.lzu.edu.cn/ubuntu-cn/ quantal main multiverse restricted universe
#上海交通大学（上海交大源，教育网的速度不用说了）
deb http://ftp.sjtu.edu.cn/ubuntu/ quantal main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ quantal-backports main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ quantal-proposed main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ quantal-security main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ quantal-updates main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu-cn/ quantal main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ quantal main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ quantal-backports main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ quantal-proposed main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ quantal-security main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ quantal-updates main multiverse restricted universe
添加好后保存，再输入 sudo apt-get update 就可以更新了，等着慢慢下载东西吧。