朋友递归更改了ubuntu文件系统权限

我的好友可以完全访问我的Ubuntu 16.04计算机来托管他的网站,并且并不了解太多。他进入文件夹并去更改文件权限,但是却跑了

chmod -R /

到775或755,他不记得了,我无法远程进入服务器进行检查。

It appears to be offline as i can't remote SSH, websites are down, like it appears to be completely offline but it isnt. I tried to login physically to it on root only to receive incorrect login when entering the username root without it even asking for a password. THOUGH the account that the command was executed form can be logged into and has sudo access.

我没有可行的备份,因此,如果有人可以帮忙,那就太好了! <3

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