配置ssh 允许 root直接远程登录
修改配置文件目录
nano /etc/ssh/sshd_config
修改如下
PermitRootLogin yes
重启服务
/etc/init.d/ssh restart
把其他的全部注释掉（#）,用163的镜像，速度嗖嗖的。
CODE:
deb [url]http://mirrors.163.com/debian/[/url] stretch main non-free contrib
deb [url]http://mirrors.163.com/debian/[/url] stretch-updates main non-free contrib
deb [url]http://mirrors.163.com/debian/[/url] stretch-backports main non-free contrib
deb-src [url]http://mirrors.163.com/debian/[/url] stretch main non-free contrib
deb-src [url]http://mirrors.163.com/debian/[/url] stretch-updates main non-free contrib
deb-src [url]http://mirrors.163.com/debian/[/url] stretch-backports main non-free contrib
deb [url]http://mirrors.163.com/debian-security/[/url] stretch/updates main non-free contrib
deb-src [url]http://mirrors.163.com/debian-security/[/url] stretch/updates main non-free contrib
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