Debain
用光盘最小安装了linux发行版debain 8系统，后需在线安装一些软件工具集，根据相关提示，确认是安装源的问题。因此需要修改apt的源。
当然了，有些iso包中含有一些工具安装包,默认就可以直接安装了。你也可以设置本地安装源，方法如下
- 插入CD/DVD
- 执行命令：apt-cdrom add（或者：apt-cdrom -d=/[你的默认光盘挂载点路径]）
debain源的版本区分
- 5是Debian
- 6是squeeze
- 7是wheezy
- 8是jessie
- 9是stretch
步骤
- 修改文件：vim /etc/apt/sources.list，在文件中注销含有DVD的哪一行，添加你需要的对应版本的源
- 执行apt-get update
- 安静地等待
以下记录国内几个jessie源
163的源
deb http://mirrors.163.com/debian/ jessie main non-free contrib
deb http://mirrors.163.com/debian/ jessie-updates main non-free contrib
deb http://mirrors.163.com/debian/ jessie-backports main non-free contrib
deb-src http://mirrors.163.com/debian/ jessie main non-free contrib
deb-src http://mirrors.163.com/debian/ jessie-updates main non-free contrib
deb-src http://mirrors.163.com/debian/ jessie-backports main non-free contrib
deb http://mirrors.163.com/debian-security/ jessie/updates main non-free contrib
deb-src http://mirrors.163.com/debian-security/ jessie/updates main non-free contrib
阿里的源
deb http://mirrors.aliyun.com/debian/ jessie main non-free contrib
deb http://mirrors.aliyun.com/debian/ jessie-updates main non-free contrib
deb http://mirrors.aliyun.com/debian/ jessie-backports main non-free contrib
deb-src http://mirrors.aliyun.com/debian/ jessie main non-free contrib
deb-src http://mirrors.aliyun.com/debian/ jessie-updates main non-free contrib
deb-src http://mirrors.aliyun.com/debian/ jessie-backports main non-free contrib
deb http://mirrors.aliyun.com/debian-security/ jessie/updates main non-free contrib
deb-src http://mirrors.aliyun.com/debian-security/ jessie/updates main non-free contribdeb
http://mirrors.aliyun.com/debian/ jessie-updates main non-free
中科大源
deb http://mirrors.ustc.edu.cn/debian jessie main contrib non-free
deb-src http://mirrors.ustc.edu.cn/debian jessie main contrib non-free
deb http://mirrors.ustc.edu.cn/debian jessie-proposed-updates main contrib non-free
deb-src http://mirrors.ustc.edu.cn/debian jessie-proposed-updates main contrib non-free
deb http://mirrors.ustc.edu.cn/debian jessie-updates main contrib non-free
deb-src http://mirrors.ustc.edu.cn/debian jessie-updates main contrib non-free
下面是stretch的源（用于Debain 9）
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
deb https://mirrors.tuna.tsinghua.edu.cn/debian/ stretch main non-free contrib
deb https://mirrors.tuna.tsinghua.edu.cn/debian/ stretch-updates main non-free contrib
deb https://mirrors.tuna.tsinghua.edu.cn/debian/ stretch-backports main non-free contrib
deb-src https://mirrors.tuna.tsinghua.edu.cn/debian/ stretch main non-free contrib
deb-src https://mirrors.tuna.tsinghua.edu.cn/debian/ stretch-updates main non-free contrib
deb-src https://mirrors.tuna.tsinghua.edu.cn/debian/ stretch-backports main non-free contrib
deb https://mirrors.tuna.tsinghua.edu.cn/debian-security/ stretch/updates main non-free contrib
deb-src https://mirrors.tuna.tsinghua.edu.cn/debian-security/ stretch/updates main non-free contrib
deb http://mirrors.ustc.edu.cn/debian/ stretch main non-free contrib
deb http://mirrors.ustc.edu.cn/debian/ stretch-updates main non-free contrib
deb http://mirrors.ustc.edu.cn/debian/ stretch-backports main non-free contrib
deb-src http://mirrors.ustc.edu.cn/debian/ stretch main non-free contrib
deb-src http://mirrors.ustc.edu.cn/debian/ stretch-updates main non-free contrib
deb-src http://mirrors.ustc.edu.cn/debian/ stretch-backports main non-free contrib
deb http://mirrors.ustc.edu.cn/debian-security/ stretch/updates main non-free contrib
deb-src http://mirrors.ustc.edu.cn/debian-security/ stretch/updates main non-free contrib
163源帮助：http://mirrors.163.com/.help/debian.html
中科大源：https://mirrors.ustc.edu.cn/repogen/
参考阿里：https://yq.aliyun.com/ziliao/29491
Centos
文件位置：/etc/yum.repos.d/
步骤
- 找到你想要的源,下载对应版本即可
- 替换该目录下文件：CentOS-Base.repo
- 顺序执行以下指令
- yum clean all
- yun makecache
参考内容：
https://blog.csdn.net/kadwf123/article/details/78231694
http://mirrors.163.com/.help/centos.html