ubuntu 16.04国内镜像源配置文件sources.list

##########  new   ####### deb http://mirrors.ustc.edu.cn/ubuntu-ports/ xenial main universe restricted deb-src http://mirrors.ustc.edu.cn/ubuntu-ports/ xenial main universe restricted deb http://mirrors.ustc.edu.cn/ubuntu-ports/ xenial-updates main universe restricted deb-src http://mirrors.ustc.edu.cn/ubuntu-ports/ xenial-updates main universe restricted deb http://mirrors.ustc.edu.cn/ubuntu-ports/ xenial-backports main restricted deb-src http://mirrors.ustc.edu.cn/ubuntu-ports/ xenial-backports main restricted deb http://mirrors.ustc.edu.cn/ubuntu-ports/ xenial-security main restricted deb-src http://mirrors.ustc.edu.cn/ubuntu-ports/ xenial-security main restricted deb http://mirrors.ustc.edu.cn/ubuntu-ports/ xenial-security universe deb-src http://mirrors.ustc.edu.cn/ubuntu-ports/ xenial-security universe deb http://mirrors.ustc.edu.cn/ubuntu-ports/ xenial-security multiverse deb-src http://mirrors.ustc.edu.cn/ubuntu-ports/ xenial-security multiverse deb http://ports.ubuntu.com/ubuntu-ports/ xenial universe restricted multiverse