This was stupid of me, but now I can't fix it. I changed the name of /usr/lib to /usr/lib64 not realizing that the sudoers.so file was in this folder.

Now I can only log in in recovery and I have lost my sudo privileges (the computer cannot locate /usr/lib/sudo/sudoers.so) and I cannot rename the file back from lib64 to lib without sudo privileges.

Is there a work around to rename or copy this folder?

3 Answers 3


Run a Live USB or DVD with Ubuntu. From there you can rename it..


I had a similar problem. I did not use a Live CD, but here's what I did:

  1. Reboot the system and press Shift intermittently while Ubuntu started to load. That allows you to select the recovery mode, which takes you to a CLI with root privileges (thus you don't need sudo). Thats the second option in the list of boot options if I remember correctly.

  2. Then run

    mount-o remount,rw /

    to remount your hard drive as read/write (read-only by default).

  3. Rename your folder with

    mv /usr/lib64 /usr/lib

Your system should work fine after a regular reboot (issue the reboot command).


If your in recovery mode enable networking to get rw access on your hard drive. Drop into the root shell

mv /usr/lib65 /usr/lib

That should fix it.

  • "enable networking to get rw access on your hard drive" What? That does not make sense to me. And the remainder of this answer is already provided as an answer.
    – gertvdijk
    Jul 10, 2013 at 20:54
  • 1
    enable networking option in safemode mounts the hard drive in rw mode.
    – Phil S.
    Jul 12, 2013 at 18:34

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