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May 29, 2012 06:23
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sudo chmod 777 / 惨剧修复简单步骤
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sudo chmod 777 / | |
sudo chmod 777 -R / | |
Linux下以上命令的危害性,试过的人都会觉得可怕,有些人遇到这种情况,第一反应是没救了,其实,你要愿意花功夫去折腾,还是有办法滴! | |
下面理了下怎么折腾: | |
道具: | |
A、B两台电脑,假设都装着Ubuntu 12.04版本的系统,都能ssh、root(平时装Linux的时候这两个最好都弄好了,以备不时之需)。 | |
情景: | |
现假设「A」是那台悲剧的执行过「sudo chmod 777 /」的电脑,什么效果,就不说了,反正不是什么好事,如果好奇,一试便知! | |
「B」电脑是正常的那台! | |
修复思路: | |
通过终端,从「B」电脑复制一份权限,上传至 「A」电脑,然后「A」恢复之! | |
「B」: | |
getfacl -R / > test.bak 获取/root下的所有文件和目录的权限列表并写入test.bak文件 | |
scp test.bak root@server:/home/ 上传test.bak至「A」(ps:这个时候root就很方便了,一般来说通过root还是有机会把文件成功上传的) | |
「A」: | |
cd /home/ 找到test.bak | |
setfacl --restore=test.bak 恢复/root下的所有文件和目录的权限,最好「A」重启一下吧! | |
ok! | |
from: http://lihuipeng007.blog.163.com/blog/static/12108438820113232563758/ |
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