sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak #备份 sudo vim /etc/apt/sources.list #修改 sudo apt-get update #更新列表
中国科学技术大学源：
Trusty(14.04)
deb http://mirrors.ustc.edu.cn/ubuntu/ trusty main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ trusty-security main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ trusty-updates main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ trusty-proposed main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ trusty-backports main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ trusty main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ trusty-security main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ trusty-updates main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ trusty-proposed main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ trusty-backports main restricted universe multiverse
Quantal(12.10)
deb http://mirrors.ustc.edu.cn/ubuntu/ quantal main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ quantal-security main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ quantal-updates main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ quantal-proposed main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ quantal-backports main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ quantal main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ quantal-security main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ quantal-updates main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ quantal-proposed main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ quantal-backports main restricted universe multiverse
Precise(12.04)
deb http://mirrors.ustc.edu.cn/ubuntu/ precise main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ precise-security main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ precise-updates main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ precise-backports main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ precise main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ precise-security main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ precise-updates main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ precise-backports main restricted universe multiverse
Oneiric(11.10)
deb http://mirrors.ustc.edu.cn/ubuntu/ oneiric main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ oneiric-security main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ oneiric-updates main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ oneiric-proposed main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ oneiric-backports main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ oneiric main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ oneiric-security main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ oneiric-updates main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ oneiric-proposed main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ oneiric-backports main restricted universe multiverse
Natty(11.04)
deb http://mirrors.ustc.edu.cn/ubuntu/ natty main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ natty-security main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ natty-updates main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ natty-proposed main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ natty-backports main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ natty main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ natty-security main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ natty-updates main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ natty-proposed main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ natty-backports main restricted universe multiverse
阿里云源：
Trusty(14.04)
deb http://mirrors.aliyun.com/ubuntu/ trusty main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ trusty-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ trusty-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ trusty-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ trusty-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ trusty main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ trusty-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ trusty-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ trusty-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ trusty-backports main restricted universe multiverse
Quantal(12.10)
deb http://mirrors.aliyun.com/ubuntu/ quantal main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ quantal-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ quantal-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ quantal-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ quantal-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ quantal main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ quantal-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ quantal-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ quantal-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ quantal-backports main restricted universe multiverse
Precise(12.04)
deb http://mirrors.aliyun.com/ubuntu/ precise main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ precise-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ precise-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ precise-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ precise-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ precise main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ precise-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ precise-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ precise-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ precise-backports main restricted universe multiverse
Oneiric(11.10)
deb http://mirrors.aliyun.com/ubuntu/ oneiric main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ oneiric-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ oneiric-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ oneiric-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ oneiric-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ oneiric main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ oneiric-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ oneiric-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ oneiric-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ oneiric-backports main restricted universe multiverse
Natty(11.04)
deb http://mirrors.aliyun.com/ubuntu/ natty main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ natty-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ natty-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ natty-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ natty-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ natty main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ natty-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ natty-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ natty-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ natty-backports main restricted universe multiverse
163源：
Trusty(14.04)
deb http://mirrors.163.com/ubuntu/ trusty main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ trusty-security main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ trusty-updates main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ trusty-proposed main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ trusty-backports main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty-security main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty-updates main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty-proposed main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty-backports main restricted universe multiverse
Quantal(12.10)
deb http://mirrors.163.com/ubuntu/ quantal main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ quantal-security main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ quantal-updates main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ quantal-proposed main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ quantal-backports main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ quantal main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ quantal-security main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ quantal-updates main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ quantal-proposed main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ quantal-backports main restricted universe multiverse
Precise(12.04)
deb http://mirrors.163.com/ubuntu/ precise main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ precise-security main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ precise-updates main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ precise-proposed main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ precise-backports main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ precise main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ precise-security main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ precise-updates main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ precise-proposed main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ precise-backports main restricted universe multiverse
Oneiric(11.10)
deb http://mirrors.163.com/ubuntu/ oneiric main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ oneiric-security main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ oneiric-updates main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ oneiric-proposed main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ oneiric-backports main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ oneiric main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ oneiric-security main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ oneiric-updates main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ oneiric-proposed main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ oneiric-backports main restricted universe multiverse
Natty(11.04)
deb http://mirrors.163.com/ubuntu/ natty main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ natty-security main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ natty-updates main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ natty-proposed main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ natty-backports main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ natty main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ natty-security main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ natty-updates main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ natty-proposed main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ natty-backports main restricted universe multiverse
sohu源：
Trusty(14.04)
deb http://mirrors.sohu.com/ubuntu/ trusty main restricted universe multiverse
deb http://mirrors.sohu.com/ubuntu/ trusty-security main restricted universe multiverse
deb http://mirrors.sohu.com/ubuntu/ trusty-updates main restricted universe multiverse
deb http://mirrors.sohu.com/ubuntu/ trusty-proposed main restricted universe multiverse
deb http://mirrors.sohu.com/ubuntu/ trusty-backports main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ trusty main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ trusty-security main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ trusty-updates main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ trusty-proposed main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ trusty-backports main restricted universe multiverse
Quantal(12.10)
deb http://mirrors.sohu.com/ubuntu/ quantal main restricted universe multiverse
deb http://mirrors.sohu.com/ubuntu/ quantal-security main restricted universe multiverse
deb http://mirrors.sohu.com/ubuntu/ quantal-updates main restricted universe multiverse
deb http://mirrors.sohu.com/ubuntu/ quantal-proposed main restricted universe multiverse
deb http://mirrors.sohu.com/ubuntu/ quantal-backports main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ quantal main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ quantal-security main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ quantal-updates main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ quantal-proposed main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ quantal-backports main restricted universe multiverse
Precise(12.04)
deb http://mirrors.sohu.com/ubuntu/ precise main restricted universe multiverse
deb http://mirrors.sohu.com/ubuntu/ precise-security main restricted universe multiverse
deb http://mirrors.sohu.com/ubuntu/ precise-updates main restricted universe multiverse
deb http://mirrors.sohu.com/ubuntu/ precise-proposed main restricted universe multiverse
deb http://mirrors.sohu.com/ubuntu/ precise-backports main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ precise main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ precise-security main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ precise-updates main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ precise-proposed main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ precise-backports main restricted universe multiverse
Oneiric(11.10)
deb http://mirrors.sohu.com/ubuntu/ oneiric main restricted universe multiverse
deb http://mirrors.sohu.com/ubuntu/ oneiric-security main restricted universe multiverse
deb http://mirrors.sohu.com/ubuntu/ oneiric-updates main restricted universe multiverse
deb http://mirrors.sohu.com/ubuntu/ oneiric-proposed main restricted universe multiverse
deb http://mirrors.sohu.com/ubuntu/ oneiric-backports main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ oneiric main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ oneiric-security main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ oneiric-updates main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ oneiric-proposed main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ oneiric-backports main restricted universe multiverse
Natty(11.04)
deb http://mirrors.sohu.com/ubuntu/ natty main restricted universe multiverse
deb http://mirrors.sohu.com/ubuntu/ natty-security main restricted universe multiverse
deb http://mirrors.sohu.com/ubuntu/ natty-updates main restricted universe multiverse
deb http://mirrors.sohu.com/ubuntu/ natty-proposed main restricted universe multiverse
deb http://mirrors.sohu.com/ubuntu/ natty-backports main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ natty main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ natty-security main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ natty-updates main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ natty-proposed main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ natty-backports main restricted universe multiverse