Ubuntu12系统更换阿里源

1.编辑源列表

sudo vim /etc/apt/sources.list

2. 删除所有内容，添加

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

3.保存退出，执行

sudo apt-get update

sudo apt-get upgrade