Ubuntu 12.10也正式發布了， 安裝好後第一件事就是更換源，Ubuntu網易的更新源速度很不錯。
Ubuntu 12.10正式版發布下載 http://www.linuxidc.com/Linux/2012-10/72581.htm
廢話少說， 上源：
首先，備份一下Ubuntu 12.10 原來的源地址列表文件
sudo cp /etc/apt/sources.list /etc/apt/sources.list.old
然後進行修改
sudo gedit /etc/apt/sources.list
可以在裡面添加資源地址，我是直接覆蓋掉原來的。
下面是網上找到的一些較好的源，有大型網站的，也有教育網的，可以根據自己的情況添加兩三個即可。
#網易的源（163源，無論是不是教育網，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 源今天還沒有更新，不過應該快了）
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
#台灣源（台灣的ubuntu 更新源還是很給力的）
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
#骨頭源，骨頭源是bones7456架設的一個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
#ubuntu.cn99.com源（推薦）:
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
#教育網源
#電子科技大學
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
#中國科技大學
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
#北京理工大學
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
#蘭州大學
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
#上海交通大學（上海交大源，教育網的速度不用說了）
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
添加好後保存，再輸入 sudo apt-get update 就可以更新了，等著慢慢下載東西吧。
