適用於 20.04 的基礎配置
/etc/apt/sources.list
deb
http://cn.archive.ubuntu.com/ubuntu/ focal main restricted universe multiverse
deb
http://cn.archive.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
deb
http://cn.archive.ubuntu.com/ubuntu/ focal-updates main restricted universe multiverse
deb
http://cn.archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse
##測試版源
deb
http://cn.archive.ubuntu.com/ubuntu/ focal-proposed main restricted universe multiverse
# 源碼
deb-src
http://cn.archive.ubuntu.com/ubuntu/ focal main restricted universe multiverse
deb-src
http://cn.archive.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
deb-src
http://cn.archive.ubuntu.com/ubuntu/ focal-updates main restricted universe multiverse
deb-src
http://cn.archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse
##測試版源
deb-src
http://cn.archive.ubuntu.com/ubuntu/ focal-proposed main restricted universe multiverse
参考：
https://wiki.ubuntu.org.cn/%E6%BA%90%E5%88%97%E8%A1%A8
ubuntu 20.04版本更新软件源为国内源（清华、网易、阿里云等等）
https://www.cnblogs.com/leeyazhou/p/12976814.html
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本帖最后由 linda 于 2023-1-18 17:30 编辑 ]
