更换全部源 一行一个
nano /etc/apt/sources.list
deb https://mirrors.ustc.edu.cn/debian buster main contrib non-free
deb https://mirrors.ustc.edu.cn/debian buster-updates main contrib non-free
deb https://mirrors.ustc.edu.cn/debian buster-backports main contrib non-free
deb https://mirrors.ustc.edu.cn/debian-security/ buster/updates main contribnon-free
Ctrl+O保存,Ctrl+X退出。
(ps,如果这步操作不好就用FinalShell,登陆后有文件管理功能可以像记事本一样改目录 /etc/apt/sources.list
)
更新
apt-get update
apt-get upgrade
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