yum可以换源，Debian 也可以
直接百度搜索：debian 国内源
换源：
Debian 默认源， /etc/apt/sources.list
删除/移除 默认源 /etc/apt/sources.list
## 这里使用163的镜像站
执行：
echo 'deb http://mirrors.163.com/debian/ stretch main non-free contrib
deb http://mirrors.163.com/debian/ stretch-updates main non-free contrib
deb http://mirrors.163.com/debian/ stretch-backports main non-free contrib
deb-src http://mirrors.163.com/debian/ stretch main non-free contrib
deb-src http://mirrors.163.com/debian/ stretch-updates main non-free contrib
deb-src http://mirrors.163.com/debian/ stretch-backports main non-free contrib
deb http://mirrors.163.com/debian-security/ stretch/updates main non-free contrib
deb-src http://mirrors.163.com/debian-security/ stretch/updates main non-free contrib' > /etc/apt/sources.list
163镜像站
deb http://mirrors.163.com/debian/ stretch main non-free contrib
deb http://mirrors.163.com/debian/ stretch-updates main non-free contrib
deb http://mirrors.163.com/debian/ stretch-backports main non-free contrib
deb-src http://mirrors.163.com/debian/ stretch main non-free contrib
deb-src http://mirrors.163.com/debian/ stretch-updates main non-free contrib
deb-src http://mirrors.163.com/debian/ stretch-backports main non-free contrib
deb http://mirrors.163.com/debian-security/ stretch/updates main non-free contrib
deb-src http://mirrors.163.com/debian-security/ stretch/updates main non-free contrib
中科大镜像站
deb https://mirrors.ustc.edu.cn/debian/ stretch main contrib non-free
deb-src https://mirrors.ustc.edu.cn/debian/ stretch main contrib non-free
deb https://mirrors.ustc.edu.cn/debian/ stretch-updates main contrib non-free
deb-src https://mirrors.ustc.edu.cn/debian/ stretch-updates main contrib non-free
deb https://mirrors.ustc.edu.cn/debian/ stretch-backports main contrib non-free
deb-src https://mirrors.ustc.edu.cn/debian/ stretch-backports main contrib non-free
deb https://mirrors.ustc.edu.cn/debian-security/ stretch/updates main contrib non-free
deb-src https://mirrors.ustc.edu.cn/debian-security/ stretch/updates main contrib non-free
阿里云镜像站
deb http://mirrors.aliyun.com/debian/ stretch main non-free contrib
deb-src http://mirrors.aliyun.com/debian/ stretch main non-free contrib
deb http://mirrors.aliyun.com/debian-security stretch/updates main
deb-src http://mirrors.aliyun.com/debian-security stretch/updates main
deb http://mirrors.aliyun.com/debian/ stretch-updates main non-free contrib
deb-src http://mirrors.aliyun.com/debian/ stretch-updates main non-free contrib
deb http://mirrors.aliyun.com/debian/ stretch-backports main non-free contrib
deb-src http://mirrors.aliyun.com/debian/ stretch-backports main non-free contrib
华为镜像站
deb https://mirrors.huaweicloud.com/debian/ stretch main contrib non-free
deb-src https://mirrors.huaweicloud.com/debian/ stretch main contrib non-free
deb https://mirrors.huaweicloud.com/debian/ stretch-updates main contrib non-free
deb-src https://mirrors.huaweicloud.com/debian/ stretch-updates main contrib non-free
deb https://mirrors.huaweicloud.com/debian/ stretch-backports main contrib non-free
deb-src https://mirrors.huaweicloud.com/debian/ stretch-backports main contrib non-free
清华大学镜像站
deb https://mirrors.tuna.tsinghua.edu.cn/debian/ stretch main contrib non-free
deb-src https://mirrors.tuna.tsinghua.edu.cn/debian/ stretch main contrib non-free
deb https://mirrors.tuna.tsinghua.edu.cn/debian/ stretch-updates main contrib non-free
deb-src https://mirrors.tuna.tsinghua.edu.cn/debian/ stretch-updates main contrib non-free
deb https://mirrors.tuna.tsinghua.edu.cn/debian/ stretch-backports main contrib non-free
deb-src https://mirrors.tuna.tsinghua.edu.cn/debian/ stretch-backports main contrib non-free
deb https://mirrors.tuna.tsinghua.edu.cn/debian-security/ stretch/updates main contrib non-free
deb-src https://mirrors.tuna.tsinghua.edu.cn/debian-security/ stretch/updates main contrib non-free
兰州大学镜像站
deb http://mirror.lzu.edu.cn/debian stable main contrib non-free
deb-src http://mirror.lzu.edu.cn/debian stable main contrib non-free
deb http://mirror.lzu.edu.cn/debian stable-updates main contrib non-free
deb-src http://mirror.lzu.edu.cn/debian stable-updates main contrib non-free
deb http://mirror.lzu.edu.cn/debian/ stretch-backports main contrib non-free
deb-src http://mirror.lzu.edu.cn/debian/ stretch-backports main contrib non-free
deb http://mirror.lzu.edu.cn/debian-security/ stretch/updates main contrib non-free
deb-src http://mirror.lzu.edu.cn/debian-security/ stretch/updates main contrib non-free
上海交大镜像站
deb https://mirror.sjtu.edu.cn/debian/ stretch main contrib non-free
deb-src https://mirror.sjtu.edu.cn/debian/ stretch main contrib non-free
deb https://mirror.sjtu.edu.cn/debian/ stretch-updates main contrib non-free
deb-src https://mirror.sjtu.edu.cn/debian/ stretch-updates main contrib non-free
deb https://mirror.sjtu.edu.cn/debian/ stretch-backports main contrib non-free
deb-src https://mirror.sjtu.edu.cn/debian/ stretch-backports main contrib non-free
deb https://mirror.sjtu.edu.cn/debian-security/ stretch/updates main contrib non-free
deb-src https://mirror.sjtu.edu.cn/debian-security/ stretch/updates main contrib non-free
