不需要修改/etc/apt/soures.list

do-release-upgrade

?

升級過程會自動更改版本

(Python3.6) appleyuchi@Laptop:apt$ lsb_release -a
No LSB modules are available.
Distributor ID:?? ?Ubuntu
Description:?? ?Ubuntu 20.04.2 LTS
Release:?? ?20.04
Codename:?? ?focal

?

然后順便把依賴換了吧

/etc/apt/sources.list

deb http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse

deb http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse

deb http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse

deb http://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiverse

deb http://mirrors.aliyun.com/ubuntu/ focal-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal-backports main restricted universe multiverse

?

?

Reference:

Linux 解決E: Sub-process /usr/bin/dpkg returned an error code (1)錯誤

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