国内机器一般需要先更换apt源才能系统更新。本文提供两种方法。

更换为国内源

编辑/etc/apt/sources.list文件，删除默认的放入下面内容

deb https://mirrors.aliyun.com/debian/ bullseye main non-free contrib
deb-src https://mirrors.aliyun.com/debian/ bullseye main non-free contrib
deb https://mirrors.aliyun.com/debian-security/ bullseye-security main
deb-src https://mirrors.aliyun.com/debian-security/ bullseye-security main
deb https://mirrors.aliyun.com/debian/ bullseye-updates main non-free contrib
deb-src https://mirrors.aliyun.com/debian/ bullseye-updates main non-free contrib
deb https://mirrors.aliyun.com/debian/ bullseye-backports main non-free contrib
deb-src https://mirrors.aliyun.com/debian/ bullseye-backports main non-free contrib

使用代理

在 /etc/apt/apt.conf.d 目录下创建一个新文件

touch /etc/apt/apt.conf.d/proxy.conf

proxy.conf内容如下，代理设置参考：https://012456.xyz/ldn/linux-proxy/

Acquire {
  HTTP::proxy "http://127.0.0.1:8080";
  HTTPS::proxy "http://127.0.0.1:8080";
}

参考链接：如何在linux上设置APT代理