Debian10 替换国内源

deb http://mirrors.tuna.tsinghua.edu.cn/debian/ buster main
deb-src http://mirrors.tuna.tsinghua.edu.cn/debian/ buster main

#deb http://security.debian.org/debian-security buster/updates main contrib
#deb-src http://security.debian.org/debian-security buster/updates main contrib
deb http://mirrors.ustc.edu.cn/debian-security/ buster/updates main contrib
deb-src http://mirrors.ustc.edu.cn/debian-security/ buster/updates main contrib

# buster-updates, previously known as 'volatile'
deb http://mirrors.tuna.tsinghua.edu.cn/debian/ buster-updates main contrib
deb-src http://mirrors.tuna.tsinghua.edu.cn/debian/ buster-updates main contrib

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