debian换源笔记

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1.备份源

ctrl+alt+t打开终端

sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak

2.打开源文件

用gedit打开源文件，ctrl+a全选删除，并粘贴更换源（任选一个）

sudo vim /etc/apt/sources.list

阿里源

bullseye 换源

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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

3.更新源

sudo apt-get update