ubuntu更改源

编辑sources.list

sudo vim /etc/apt/sources.list
然后将下面的内容替换sources.list的内容
deb http://mirrors.zju.edu.cn/ubuntu/ precise main restricted universe multiverse
deb http://mirrors.zju.edu.cn/ubuntu/ precise-backports main restricted universe multiverse
deb http://mirrors.zju.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse
deb http://mirrors.zju.edu.cn/ubuntu/ precise-security main restricted universe multiverse
deb http://mirrors.zju.edu.cn/ubuntu/ precise-updates main restricted universe multiverse
deb-src http://mirrors.zju.edu.cn/ubuntu/ precise main restricted universe multiverse
deb-src http://mirrors.zju.edu.cn/ubuntu/ precise-backports main restricted universe multiverse
deb-src http://mirrors.zju.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse
deb-src http://mirrors.zju.edu.cn/ubuntu/ precise-security main restricted universe multiverse
deb-src http://mirrors.zju.edu.cn/ubuntu/ precise-updates main restricted universe multiverse
下面是中科大的源,挺快的,
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
执行这条命令即可
sudo apt-get update

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