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I am not able to log in as root in Fedora 17

Error is

su: cannot set groups: Operation not permitted

What to do to solve this error The permission has been changed to

-rwxrwxrwx

I want to change permission to

-rwsrwsrws.
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2  
The permissions of what have been changed? –  terdon Dec 9 '12 at 13:37
    
Show the entries for root in /etc/passwd and /etc/groups. What does ls -l /bin/su say? If those permissions are screwed up, rpm -qf /bin/su tells you it belongs to coreutils; yum reinstall coreutils (or, less brutally, rpm --setperms coreutils) should fix that. –  vonbrand Feb 25 '13 at 2:42

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