Ubuntu国内源

ubuntu12.04添加国内软件源（163、sohu、ustc），编辑sources.list文件 
sudo nano /etc/apt/sources.list 
添加如下内容，保存然后sudo apt-get update. 
如果是其它ubuntu版本，只需把precise改为相应的版本的名字。hardy(8.04),lucid(10.04),maverick(10.10),oneiric(11.10),quantal(12.10),precise(12.04) 

#163 
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 
#sohu 
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/ precisec-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 
#ustc 
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