# Debian更换清华源

## 确定Debian发行版

```shell
cat /etc/os-release
```

## 换源

[清华Debian源地址](https://mirrors.tuna.tsinghua.edu.cn/help/debian/)

```shell
# 防止https安装不上
apt-get install apt-transport-https ca-certificates
# 备份
mv /etc/apt/sources.list /etc/apt/sources.list.back
# 没有编辑软件 通过命令写入文件
echo "deb https://mirrors.tuna.tsinghua.edu.cn/debian/ buster main contrib non-free" >> /etc/apt/sources.list
echo "# deb-src https://mirrors.tuna.tsinghua.edu.cn/debian/ buster main contrib non-free" >> /etc/apt/sources.list
echo "deb https://mirrors.tuna.tsinghua.edu.cn/debian/ buster-updates main contrib non-free" >> /etc/apt/sources.list
echo "# deb-src https://mirrors.tuna.tsinghua.edu.cn/debian/ buster-updates main contrib non-free" >> /etc/apt/sources.list
echo "deb https://mirrors.tuna.tsinghua.edu.cn/debian/ buster-backports main contrib non-free" >> /etc/apt/sources.list
echo "# deb-src https://mirrors.tuna.tsinghua.edu.cn/debian/ buster-backports main contrib non-free" >> /etc/apt/sources.list
echo "deb https://mirrors.tuna.tsinghua.edu.cn/debian-security buster/updates main contrib non-free" >> /etc/apt/sources.list
echo "# deb-src https://mirrors.tuna.tsinghua.edu.cn/debian-security buster/updates main contrib non-free" >> /etc/apt/sources.list
# 更新
apt-get upgrade
apt-get update
```