linux Ubuntu 12.10更新源

安装 Ubuntu 12.10 时默认的源都停止了更新，需要使用新的源进行更新

以下以阿里源为例：

复制备份sources.list.bak

sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak

打开sources.list

sudo vi /etc/apt/sources.list

删除里面的全部内容，替换为以下：

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

然后保存退出

然后尽可以进行正常更新及下载软件了

sudo apt-get update

sudo apt-get upgrede

最后

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