1.备份系统自带源
mv /etc/apt/sources.list /etc/apt/sources.list.bak
2.修改/etc/apt/sources.list文件
vim /etc/apt/sources.list
加入如下内容
1 deb-src http://archive.ubuntu.com/ubuntu xenial main restricted #Added by software-properties 2 deb http://mirrors.aliyun.com/ubuntu/ xenial main restricted 3 deb-src http://mirrors.aliyun.com/ubuntu/ xenial main restricted multiverse universe #Added by software-properties 4 deb http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted 5 deb-src http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted multiverse universe #Added by software-properties 6 deb http://mirrors.aliyun.com/ubuntu/ xenial universe 7 deb http://mirrors.aliyun.com/ubuntu/ xenial-updates universe 8 deb http://mirrors.aliyun.com/ubuntu/ xenial multiverse 9 deb http://mirrors.aliyun.com/ubuntu/ xenial-updates multiverse 10 deb http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse 11 deb-src http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse #Added by software-properties 12 deb http://archive.canonical.com/ubuntu xenial partner 13 deb-src http://archive.canonical.com/ubuntu xenial partner 14 deb http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted 15 deb-src http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted multiverse universe #Added by software-properties 16 deb http://mirrors.aliyun.com/ubuntu/ xenial-security universe 17 deb http://mirrors.aliyun.com/ubuntu/ xenial-security multiverse
3.更新生效
apt-get update
原文：https://www.cnblogs.com/walblog/p/9062754.html