I made this mistake at the /usr directory

sudo chmod -R 777 bin

The next time i used sudo, it gives me this prompt:

sudo must be setuid root

What I did is copy and replaced this sudo thinking it would recover its default permission. Now the sudo command prompts this :

bash: /usr/bin/sudo: Permission denied

HELP. I cant change the permission of sudo already. pexec did nothing as well.

  • You can try to boot from an Live CD and use the root account to restore the permissions... – Manuel May 29 '13 at 6:40
  • Try the command sudo -i, type your password, and then try to change permissions. – Mitch May 29 '13 at 6:41

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