Linux apt 切换源

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第一步：修改sources.list配置文件：
sudo vim /etc/apt/sources.list
在文件最前面添加以下条目，保险起见，的操作之前做好备份
deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb h

Linux apt 切换源最先出现在Python成神之路。