Ubuntu国内源，更新速度很快哟

163源：
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

阿里源：

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

centos源（放心使用）：

deb http://centos.bitcomm.cn/ubuntu trusty main restricted universe multiverse

deb http://centos.bitcomm.cn/ubuntu trusty-security main restricted universe multiverse

deb http://centos.bitcomm.cn/ubuntu trusty-updates main restricted universe multiverse

deb http://centos.bitcomm.cn/ubuntu trusty-backports main restricted universe multiverse

deb http://centos.bitcomm.cn/ubuntu trusty-proposed main restricted universe multiverse

deb-src http://centos.bitcomm.cn/ubuntu trusty main restricted universe multiverse

deb-src http://centos.bitcomm.cn/ubuntu trusty-security main restricted universe multiverse

deb-src http://centos.bitcomm.cn/ubuntu trusty-updates main restricted universe multiverse

deb-src http://centos.bitcomm.cn/ubuntu trusty-backports main restricted universe multiverse

deb-src http://centos.bitcomm.cn/ubuntu trusty-proposed main restricted universe multiverse

搜狐源：

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


1、首先备份Ubuntu 11.10源列表
sudo cp /etc/apt/sources.list /etc/apt/sources.list.backup （备份下当前的源列表）
2、修改更新源
sudo gedit /etc/apt/sources.list


第三步：选择好你要的源并且复制到你的源列表之后，关闭列表，使用sudo apt-get update命令更新
第四步：sudo apt-get upgrade