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Possible Duplicate:
What if I accidently run command chmod

I changed file permissions recursively on the root directory '/' with sudo chmod / 777 -R and after that i run "save mode" and i was changed main directories like a sys, boot, root , etc using (sudo chmod 440 /etc -R) etc and after that can't boot system because many of process don't have permissions.

Please help.

marked as duplicate by Oli May 23 '11 at 14:58

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    ouch...good luck sir, I would reinstall and copy config file contents/documents...you might be able to reinstall and diff all files on the new drive to the old drive... – RobotHumans Jan 12 '11 at 8:21
  • @aking1012: this should be an answer (maybe a bit more elaborate). – Takkat Jan 12 '11 at 10:52
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    @Marcin: hope you have a good backup – Takkat Jan 12 '11 at 10:53
  • What was the reason for doing this? – RolandiXor Jan 12 '11 at 12:31
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    @RolandTaylor there never is a reason, it's always a mistake :P – Marco Ceppi Jan 12 '11 at 14:32
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You're going to have to reinstall.