sudo and /etc/sudoers

Florian Diesch diesch at
Wed Dec 31 21:52:18 UTC 2008

"Koh Choon Lin" <sgfreedom at> wrote:

>>>> Which major distribution doesn't have this sudo system on by default?
>>>> I remembered Fedora being of them or has that been changed?
>>> IIRC, Debian.
>> Not unless they backed out of it since Ubuntu came along.  I was using sudo
>> back then.  He didn't ask "which major distribution doesn't enable root".
> Interestingly, one has to reset the root password to login as root.
> Thus, does Ubuntu maintains the same root password for all installed
> systems? 

At login a hash of your password is compared with the password hash
stored in /etc/shadow (or whatever password database you are using).
Root's password hash in /etc/shadow is set to a value that isn't a
valid hash (the hash function is guaranteed to never return this
value) so very password you may try will fail.

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