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An user made the chmod -R 0774 / command. When i execute the su command i get:

"it was not possible to define groups".

If i try to ssh from the root i get:

/bin/bash permission denied

the permissions in /bin/bash are 0755

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7… - please note that the accepted answer is blatantly wrong (and modded at -7 for this very reason). Personally, unless I was looking for a technical challenge, I would just reinstall. It would save time and be more or less the only way to be sure of all permissions being correctly reinstated. – Daniel Andersson Jan 9 '13 at 13:11
After a while i was unable to solve it completely. Will reinstall the system and make a snapshot.Thanks for the reply – FabioCosta Jan 9 '13 at 14:43

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