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I think I messed up, I can't use sudo, it says:

sudo: /etc/sudo.conf is world writable  
sudo : /use/bin/sudo must be owned by uid 0 and have the setuid bit set

When I try to reinstall my Ubuntu, the message says:

incorrect permission on/use/libexec/polkit-agent-helper-1 (needs to be setuid root)
Ajay
  • 2,241
faridfred
  • 11

1 Answers1

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Try this solution:

  1. Log out from Ubuntu
  2. Log in as root
  3. Execute the following command: chown root:root /usr/bin/sudo && chmod 4755 /usr/bin/sudo
  4. Log out
  5. Log in using the user profile you use.
FlamebladeOmega
  • 21