1、复制原文件备份
cp /etc/apt/sources.list /etc/apt/sources.list.bak
2、编辑源列表文件
vim /etc/apt/sources.list
3、将原来的列表删除，添加如下内容,选一个
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
deb http://mirrors.163.com/debian/ squeeze main non-free contrib
deb http://mirrors.163.com/debian/ squeeze-updates main non-free contrib
deb http://mirrors.163.com/debian/ squeeze-lts main non-free contrib
deb-src http://mirrors.163.com/debian/ squeeze main non-free contrib
deb-src http://mirrors.163.com/debian/ squeeze-updates main non-free contrib
deb-src http://mirrors.163.com/debian/ squeeze-lts main non-free contrib
deb http://mirrors.163.com/debian-security/ squeeze/updates main non-free contrib
deb-src http://mirrors.163.com/debian-security/ squeeze/updates main non-free contrib
deb http://mirrors.163.com/debian-backports/ squeeze-backports main contrib non-free
deb-src http://mirrors.163.com/debian-backports/ squeeze-backports main contrib non-free
deb http://mirrors.163.com/ubuntu/ precise main universe restricted multiverse
deb-src http://mirrors.163.com/ubuntu/ precise main universe restricted multiverse
deb http://mirrors.163.com/ubuntu/ precise-security universe main multiverse restricted
deb-src http://mirrors.163.com/ubuntu/ precise-security universe main multiverse restricted
deb http://mirrors.163.com/ubuntu/ precise-updates universe main multiverse restricted
deb http://mirrors.163.com/ubuntu/ precise-proposed universe main multiverse restricted
deb-src http://mirrors.163.com/ubuntu/ precise-proposed universe main multiverse restricted
deb http://mirrors.163.com/ubuntu/ precise-backports universe main multiverse restricted
deb-src http://mirrors.163.com/ubuntu/ precise-backports universe main multiverse restricted
deb-src http://mirrors.163.com/ubuntu/ precise-updates universe main multiverse restricted
4、更新
apt-get update
apt-get upgrade
