cd /etc/apt
cp sources.list sources.list.bak
vim /etc/apt/sources.list
将sources.list文件清空,填入以下内容(此内容为debian9.0的sources.list配置)
#
# deb cdrom:[Debian GNU/Linux 9.0.0 _Stretch_ - Official amd64 DVD Binary-1 20170617-13:08]/ stretch main
deb cdrom:[Debian GNU/Linux 9.0.0 _Stretch_ - Official amd64 DVD Binary-1 20170617-13:08]/ stretch main
deb http://mirrors.tuna.tsinghua.edu.cn/debian/ stretch main
deb-src http://mirrors.tuna.tsinghua.edu.cn/debian/ stretch main
deb http://security.debian.org/debian-security stretch/updates main
deb-src http://security.debian.org/debian-security stretch/updates main
# stretch-updates, previously known as 'volatile'
deb http://mirrors.tuna.tsinghua.edu.cn/debian/ stretch-updates main
deb-src http://mirrors.tuna.tsinghua.edu.cn/debian/ stretch-updates main
3 保存退出, 并更新apt-get