Ubuntu快速下载换源网址

Ubuntu快速下载换源网址

下载网址：
http://mirrors.aliyun.com/ubuntu-releases/14.04/ 
http://mirrors.aliyun.com/ubuntu-releases/16.04/ 
http://mirrors.aliyun.com/ubuntu-releases/18.04/ 

换源：
sudo cp /etc/apt/sources.list /etc/apt/sources_init.list
sudo gedit /etc/apt/sources.list

deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security main restricted universe multiverse

更新：
sudo apt-get update
sudo apt-get upgrade

Windows操作系统下可直接转到对应网址下载：

官网下载速递20KB,换源测试下载速度4MB…