Problem in changing password

mostafa mostafaradwan at
Tue Oct 9 14:24:51 UTC 2007

Jacques B. wrote:
> On 10/8/07, Roopnarine, Peter <proopnarine at> wrote:
>> -----Original Message-----
>> From: fedora-list-bounces at on behalf of mostafa
>> Sent: Mon 10/8/2007 8:07 PM
>> To: For users of Fedora
>> Subject: Problem in changing password
>> Dear all,
>> I have a problem in changing root's password form command line in Fedora
>> 7, it gives a message; (User not known to the underlying authentication
>> module).
>> Thanks a lot
>> Are you already logged in as root?!
> Peter's question raises a valid point when requesting assistance.  Can
> you please provide the context in which this is happening.  Are you
> logged in as root?  su to root?  su - to root?  Can you provide the
> sceen output of what you are trying to do (perhaps via using the
> script command to capture the commands and output.
> Also I gather you confirmed that the root account exists in
> /etc/passwd and /etc/shadow?  Can you post same (minus the hash for
> the password of course)?
> And of course we are assuming a standalone system with no other method
> of authentication beyond a default F7 install. Is that correct?
> Without this info you may be left with either no suitable answer or
> having to try a bunch of suggestions that would have been avoided has
> the info been provided when stating your problem.
> Jacques B.
Thanks for reply,that is what happen:
([mostafa at mostafa ~]$ su -
[root at mostafa ~]# passwd
Changing password for user root.
New UNIX password:
Retype new UNIX password:
passwd: User not known to the underlying authentication module
[root at mostafa ~]#

Thanks to all.

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