打开源文件
sudo gedit /etc/apt/sources.list
填写相关源(只适用于16.04)
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial main restricted universe multiverse
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security main restricted universe multiverse
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates main restricted universe multiverse
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-proposed main restricted universe multiverse
deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial main restricted universe multiverse
deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security main restricted universe multiverse
deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates main restricted universe multiverse
deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse
deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-proposed main restricted universe multiverse
# 163
#deb http://mirrors.163.com/ubuntu/ xenial main restricted universe multiverse
#deb http://mirrors.163.com/ubuntu/ xenial-security main restricted universe multiverse
#deb http://mirrors.163.com/ubuntu/ xenial-updates main restricted universe multiverse
#deb http://mirrors.163.com/ubuntu/ xenial-proposed main restricted universe multiverse
#deb http://mirrors.163.com/ubuntu/ xenial-backports main restricted universe multiverse
#deb-src http://mirrors.163.com/ubuntu/ xenial main restricted universe multiverse
#deb-src http://mirrors.163.com/ubuntu/ xenial-security main restricted universe multiverse
#deb-src http://mirrors.163.com/ubuntu/ xenial-updates main restricted universe multiverse
#deb-src http://mirrors.163.com/ubuntu/ xenial-proposed main restricted universe multiverse
#deb-src http://mirrors.163.com/ubuntu/ xenial-backports main restricted universe multiverse
# zhong ke da ipv4
# deb http://debian.ustc.edu.cn/ubuntu/ xenial main multiverse restricted universe
# deb http://debian.ustc.edu.cn/ubuntu/ xenial-backports main multiverse restricted universe
# deb http://debian.ustc.edu.cn/ubuntu/ xenial-proposed main multiverse restricted universe
# deb http://debian.ustc.edu.cn/ubuntu/ xenial-security main multiverse restricted universe
# deb http://debian.ustc.edu.cn/ubuntu/ xenial-updates main multiverse restricted universe
# deb-src http://debian.ustc.edu.cn/ubuntu/ xenial main multiverse restricted universe
# deb-src http://debian.ustc.edu.cn/ubuntu/ xenial-backports main multiverse restricted universe
# deb-src http://debian.ustc.edu.cn/ubuntu/ xenial-proposed main multiverse restricted universe
# deb-src http://debian.ustc.edu.cn/ubuntu/ xenial-security main multiverse restricted universe
# deb-src http://debian.ustc.edu.cn/ubuntu/ xenial-updates main multiverse restricted universe
