$ sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak
$ sudo sed -i 's/security.ubuntu/mirrors.aliyun/g' /etc/apt/sources.list
$ sudo sed -i 's/archive.ubuntu/mirrors.aliyun/g' /etc/apt/sources.list
$ sudo apt update
$ sudo apt-get upgrade //更新已安装的包到最新,这个是可选的
Ubuntu换源
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转载麻烦附上本文链接和本声明,感谢!
博主<叶家星>博客园链接如下:https://www.cnblogs.com/yejiaxing-01/