#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 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
 
 
#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

参考：
https://www.oschina.net/code/snippet_105637_34442