备份
mv /etc/apt/sources.list /etc/apt/sources.list.bak
直接追加
echo deb http://mirrors.163.com/debian/ jessie main non-free contrib > /etc/apt/sources.list \
echo deb http://mirrors.163.com/debian/ jessie-updates main non-free contrib >> /etc/apt/sources.list \
echo deb http://mirrors.163.com/debian/ jessie-backports main non-free contrib >> /etc/apt/sources.list \
echo deb-src http://mirrors.163.com/debian/ jessie main non-free contrib >> /etc/apt/sources.list \
echo deb-src http://mirrors.163.com/debian/ jessie-updates main non-free contrib >> /etc/apt/sources.list \
echo deb-src http://mirrors.163.com/debian/ jessie-backports main non-free contrib >> /etc/apt/sources.list \
echo deb http://mirrors.163.com/debian-security/ jessie/updates main non-free contrib >> /etc/apt/sources.list \
echo deb-src http://mirrors.163.com/debian-security/ jessie/updates main non-free contrib >> /etc/apt/sources.list \
或者编辑
vim /etc/apt/sources.list
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
最后更新源
apt-get update