- 备份
sudo cp /etc/apt/source.list /etc/apt/source.list.bak
- 修改配置文件/etc/apt/source.list
- sudo vim /etc/apt/source.list
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal main restricted deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-updates main restricted deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal universe deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-updates universe deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal multiverse deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-updates multiverse deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-backports main restricted universe multiverse deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-security main restricted deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-security universe deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-security multiverse
- 刷新软件源信息
sudo apt update
- 更新软件
sudo apt upgrade参考
- https://blog.csdn.net/weixin_43314519/article/details/106496095
