首先要具備一個好的網絡環境，切忌垃圾校園網

很多時候的報錯就是因為網斷了

其次要找一個和Ubuntu版本一致的源，比如我是20.04

再者是要將Codename換成與自己符合的

參考

查看Codename：

lsb_release -a

把TODO換成Codename

deb http://mirrors.aliyun.com/ubuntu/ TODO main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ TODO main restricted universe multiversedeb http://mirrors.aliyun.com/ubuntu/ TODO-security main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ TODO-security main restricted universe multiversedeb http://mirrors.aliyun.com/ubuntu/ TODO-updates main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ TODO-updates main restricted universe multiversedeb http://mirrors.aliyun.com/ubuntu/ TODO-proposed main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ TODO-proposed main restricted universe multiversedeb http://mirrors.aliyun.com/ubuntu/ TODO-backports main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ TODO-backports main restricted universe multiverse

最后如果apt-get update/grade 報錯，可以把源里面的https改成http

參考

總結

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