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August 22, 2018 11:26
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Steps for changing owner and permissions of /usr/bin/sudo to root again
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| ### when we see the error "sudo: /usr/bin/sudo must be owned by uid 0 and have the setuid bit set", then there is no need to reinstall the os, following is the workaround | |
| Steps: | |
| 1) login to recovery mode | |
| 2) mount -o remount,rw / #recovery mode defaults to mounting / as read-only. you need to remount it before you can change permissions | |
| 3) chown -R root:root /usr/ #change the owner of /usr to root, if changed to any other user | |
| 4) chmod 4755 /usr/bin/sudo #change the permission of /usr/bin/sudo to 4755 |
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