换源 先备份
cp /etc/apt/sources.list /etc/apt/sources.list bak
备份完后
sudo vi /etc/apt/sources.list
没有 vii vim 也可以
阿里的有点bug cn 是可以的
##Ubuntu 官方更新服务器(欧洲,此为官方源,国内较慢,但无同步延迟问题,电信、移动/铁通、联通等##公网用户可以使用): deb http://archive.ubuntu.com/ubuntu/ trusty main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu/ trusty-security main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu/ trusty-updates main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu/ trusty-proposed main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ trusty main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ trusty-security main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ trusty-updates main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ trusty-proposed main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse ##国内默认源 deb http://cn.archive.ubuntu.com/ubuntu/ trusty main restricted universe multiverse deb http://cn.archive.ubuntu.com/ubuntu/ trusty-security main restricted universe multiverse deb http://cn.archive.ubuntu.com/ubuntu/ trusty-updates main restricted universe multiverse deb http://cn.archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse ##測試版源 deb http://cn.archive.ubuntu.com/ubuntu/ trusty-proposed main restricted universe multiverse # 源碼 deb-src http://cn.archive.ubuntu.com/ubuntu/ trusty main restricted universe multiverse deb-src http://cn.archive.ubuntu.com/ubuntu/ trusty-security main restricted universe multiverse deb-src http://cn.archive.ubuntu.com/ubuntu/ trusty-updates main restricted universe multiverse deb-src http://cn.archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse ##測試版源 deb-src http://cn.archive.ubuntu.com/ubuntu/ trusty-proposed main restricted universe multiverse # Canonical 合作夥伴和附加 deb http://archive.canonical.com/ubuntu/ trusty partner deb http://extras.ubuntu.com/ubuntu/ trusty main 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
sudo apt -get update
在更新中 强制退出 的话
再一次apt-get 时 提示 unable 什么的 把那么文件删掉 就可以
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