这篇文章上次修改于 2315 天前，可能其部分内容已经发生变化，如有疑问可询问作者。 替换源文件：/etc/apt/sources.list ``` # deb cdrom:[Ubuntu 16.04 LTS _Xenial Xerus_ - Release amd64 (20160420.1)]/ xenial main restricted deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial main restricted deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates main restricted deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial universe deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates universe deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial multiverse deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates multiverse deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security main restricted deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security universe deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security multiverse</pre> ``` >网卡信息中增加dns-nameserver 114.114.114.114 ，后执行`sudo apt-get update`
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