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unable to change the root password?

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# 1  
Old 08-18-2010
MySQL unable to change the root password?
I tried to change the root password. but it shows the following error.
Code:
passwd: Authentication token manipulation error
passwd: password unchanged

If I login as a normal user that time I'm able to change my (user) password.
If I login as a ROOT then I'm not able to change the password root password.
How to solve this problem.
# 2  
Old 08-18-2010
Hi,
Is this a standalone system or bound to a NIS server ?

-Raja
# 3  
Old 08-18-2010
NIS server.
# 4  
Old 08-18-2010
If its NIS, and if you need to change the root password at NIS, you should use
Code:
yppasswd root

However you can also make your system's root password refer to your local passwd entry and rest of the user's login to refer NIS. To do this you need to unbind from NIS (stop ypbind), change root passwd using
Code:
passwd root

-Raja
# 5  
Old 08-18-2010
sorry.. rajamadhavan
the yppasswd command is not found.
i'm using Ubuntu OS...
for standalone system how to solve this problem?
Last edited by ungalnanban; 08-18-2010 at 07:05 AM..
# 6  
Old 08-19-2010
at my Red Hat Enterprise Linux Server 5.2 it is /usr/bin/yppasswd
# 7  
Old 08-21-2010
* did you any update last success passwd ?

* did you check permission /etc/passwd and /etc/shadow

* is there you any change entries in /etc/pam.d/common_password ?
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