Re: Recovering from "chown -R" disaster

["Jóhann B. Guðmundsson" <johannbg hi is>]

> Please start new threads!
>
> Am Donnerstag, den 13.09.2007, 16:34 -0500 schrieb Michael Weber:
>> Hey, all!
>>
>> I did a bad one.  I was in the wrong directory and did a chown -R
>> oracle: * and munged up my system.  It looks like there was a symlink
>> somewhere back to the root because all of the files and folders,
>> including /, were owned by oracle.
>
> man chown says:
>        -P     do not traverse any symbolic links (default)
>
> so I don't think that was the problem.
>
> If your software is installed from rpms, you can query the rpmdb to ge
> the owner information out again.
>
> Next time you can use getfacl to backup the info, and setfacl to restore
> it.
>
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For restoring default file permissions on packages..

for p in $(rpm -qa); do rpm --setperms $p; done
for p in $(rpm -qa); do rpm --setugids $p; done

and for home directorys..

for u in `ls /home`; do chown -R $u.users /home/$u/; done

Best regards
        Johann B.