如何将Ubuntu 22.04的yum源更新至最新版本？

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系统安装完成，无法安装软件+官网预写的源访问不通+解决方法+改为国内源+root@jupyter:/etc/apt

系统安装完成，无法安装软件

官网预写的源访问不通​​archive.ubuntu.com/ubuntu​​

解决办法

更改为国内源

root@jupyter:/etc/apt# find / -name sources.list
/etc/apt/sources.list
cp /etc/apt/sources.list /etc/apt/sources.list.bak
vi /etc/apt/sources.list
# 清空内容，写入下方代码块deb mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse
deb-src mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse

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

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

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

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

验证

apt-get udpate
或
apt-get install 软件名