ubuntu-port国内源
ubuntu把arm等源移到ubuntu-port去了，官方的源鬼死慢，于是来分享个国内源
注意，本人遇到更新卡在正在等待报头，后来把其中https改成http就好了。
中科大
# 默认注释了源码仓库，如有需要可自行取消注释
deb https://mirrors.ustc.edu.cn/ubuntu-ports/ xenial main restricted universe multiverse
# deb-src https://mirrors.ustc.edu.cn/ubuntu-ports/ xenial main main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu-ports/ xenial-updates main restricted universe multiverse
# deb-src https://mirrors.ustc.edu.cn/ubuntu-ports/ xenial-updates main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu-ports/ xenial-backports main restricted universe multiverse
# deb-src https://mirrors.ustc.edu.cn/ubuntu-ports/ xenial-backports main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu-ports/ xenial-security main restricted universe multiverse
# deb-src https://mirrors.ustc.edu.cn/ubuntu-ports/ xenial-security main restricted universe multiverse
# 预发布软件源，不建议启用
# deb https://mirrors.ustc.edu.cn/ubuntu-ports/ xenial-proposed main restricted universe multiverse
# deb-src https://mirrors.ustc.edu.cn/ubuntu-ports/ xenial-proposed main restricted universe multiverse
其中wily是ubuntu版本号根据自己使用的版本替换，以root权限改 /etc/apt/sources.list 即可
ubuntu14.04: trusty
ubuntu15.04: wily
ubuntu16.04:xenial
出现访问不了的可以试试下面解决方法(IPV6出问题用IPV4之类)：
mirrors.ustc.edu.cn由中国科学技术大学、中国科学技术大学网络信息中心支持，USTC LUG 维护。
机器域名
IPv4/v6: mirrors.ustc.edu.cn （能解析出教育网/电信/移动/v6地址）
v4only: mirrors4.ustc.edu.cn （能解析出教育网/电信/移动地址）
v6only: mirrors6.ustc.edu.cn
在有些地方DNS会解析出电信地址，但使用教育网地址访问更快，这时可以通过修改 hosts 指定强制使用教育网地址访问。
教育网IP：202.38.95.110
电 信IP：202.141.160.110
移 动IP：202.141.176.110
IPv6： 2001:da8:d800:95::110
源帮助：http://mirrors.ustc.edu.cn/help/ubuntu-ports.html
清华源
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ wily main multiverse restricted universe
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ wily-backports main multiverse restricted universe
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ wily-proposed main multiverse restricted universe
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ wily-security main multiverse restricted universe
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ wily-updates main multiverse restricted universe
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ wily main multiverse restricted universe
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ wily-backports main multiverse restricted universe
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ wily-proposed main multiverse restricted universe
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ wily-security main multiverse restricted universe
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ wily-updates main multiverse restricted universe
其中wily是ubuntu版本号根据自己使用的版本替换，以root权限改 /etc/apt/sources.list 即可
ubuntu14.04: trusty
ubuntu15.04: wily
ubuntu16.04:xenial