Linux mint 19 清化大学开源镜像源配置

deb https://mirrors.ustc.edu.cn/linuxmint tricia main upstream import backport 

deb https://mirrors.ustc.edu.cn/ubuntu/ bionic main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-security main restricted universe multiverse

来源：oschina

链接：https://my.oschina.net/qwfys200/blog/4287765