problems with command su

problems with command su

[Vladimir E. Rodriguez]

Hello, I'm new user in linux community. I have installed in my computer 
mandrake linux 10.0

Sometime ago it was working normal without problems. After that I changed the 
root password, always that I want to change something in the configuration of 
the system, I run su from other user (vladimir).

But the system says 'invalid password'. I tried the old, and new password, but 
it doesn't work

I have to logout, and login with root to change some configurations.

Anyone could help me!!

thank you

Vladimir
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Re: problems with command su

[joy merwin monteiro]

Hi,

when you are at the LILO bootloader  prompt type
single as an argument to the kernel.
after it boots , type passwd to change your password.

should work, try it out and tell us...

The same should work on grub as well,
there is an option to edit kernel parameters before booting.
try it out.

regards,
Joy.M.Monteiro 


On Tue, 7 Dec 2004 11:01:31 -0500, Vladimir E. Rodriguez
<vrodriguez@municipiodeloja.gov.ec> wrote:
> Hello, I'm new user in linux community. I have installed in my computer
> mandrake linux 10.0
> 
> Sometime ago it was working normal without problems. After that I changed the
> root password, always that I want to change something in the configuration of
> the system, I run su from other user (vladimir).
> 
> But the system says 'invalid password'. I tried the old, and new password, but
> it doesn't work
> 
> I have to logout, and login with root to change some configurations.
> 
> Anyone could help me!!
> 
> thank you
> 
> Vladimir
> -
> To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.linux-learn.org/faqs
> 


-- 
people always turn away,
from the eyes of a stranger...
Afraid to know
what lies behind the stare.......
    --QueensRyche
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Re: problems with command su

[Vladimir E. Rodriguez]

Hello again, I tried this thing but it doesn't work.
Also I checked that my user vladimir belongs to the group wheel, it's true, 
but I can't log with su.

Please someone could help me?

Thanks

Vladimir

On Tuesday 07 December 2004 13:21, joy merwin monteiro wrote:
> Hi,
>
> when you are at the LILO bootloader  prompt type
> single as an argument to the kernel.
> after it boots , type passwd to change your password.
>
> should work, try it out and tell us...
>
> The same should work on grub as well,
> there is an option to edit kernel parameters before booting.
> try it out.
>
> regards,
> Joy.M.Monteiro
>
>
> On Tue, 7 Dec 2004 11:01:31 -0500, Vladimir E. Rodriguez
>
> <vrodriguez@municipiodeloja.gov.ec> wrote:
> > Hello, I'm new user in linux community. I have installed in my computer
> > mandrake linux 10.0
> >
> > Sometime ago it was working normal without problems. After that I changed
> > the root password, always that I want to change something in the
> > configuration of the system, I run su from other user (vladimir).
> >
> > But the system says 'invalid password'. I tried the old, and new
> > password, but it doesn't work
> >
> > I have to logout, and login with root to change some configurations.
> >
> > Anyone could help me!!
> >
> > thank you
> >
> > Vladimir
> > -
> > To unsubscribe from this list: send the line "unsubscribe linux-newbie"
> > in the body of a message to majordomo@vger.kernel.org
> > More majordomo info at  http://vger.kernel.org/majordomo-info.html
> > Please read the FAQ at http://www.linux-learn.org/faqs

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Re: problems with command su

[Jim Nelson]

Vladimir E. Rodriguez wrote:
> Hello again, I tried this thing but it doesn't work.
> Also I checked that my user vladimir belongs to the group wheel, it's true, 
> but I can't log with su.
> 
> Please someone could help me?
> 
> Thanks
> 
> Vladimir
> 

Last time I had to unlock a box, I booted into Knoppix, mounted the root fs, and 
deleted the root password in /etc/shadow.  In about 3 minutes.  Scared the scat 
out of the guys watching me.

Just make sure you fix the permissions both before and after - /etc/shadow is set 
at 0400 and vi will gripe.
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problems with command su

[Vladimir E. Rodriguez]

Hello, I'm new user in linux community. I have installed in my computer 
mandrake linux 10.0

Sometime ago it was working normal without problems. After that I changed the 
root password, always that I want to change something in the configuration of 
the system, I run su from other user (vladimir).

But the system says 'invalid password'. I tried the old, and new password, but 
it doesn't work

I have to logout, and login with root to change some configurations.

Anyone could help me!!

thank you

Vladimir

Re: problems with command su

[kaushal]

Im not sure but make sure your 'su' command has not been aliased by
someone/thing.
[sfaf@sdf]alias

If u find an entry for su there,type 'unalaias su' and it should work.
gudlk.
kaushal.
rocsys.
On Tue, 2004-12-07 at 21:31, Vladimir E. Rodriguez wrote:
> Hello, I'm new user in linux community. I have installed in my computer 
> mandrake linux 10.0
> 
> Sometime ago it was working normal without problems. After that I changed the 
> root password, always that I want to change something in the configuration of 
> the system, I run su from other user (vladimir).
> 
> But the system says 'invalid password'. I tried the old, and new password, but 
> it doesn't work
> 
> I have to logout, and login with root to change some configurations.
> 
> Anyone could help me!!
> 
> thank you
> 
> Vladimir
> -
> To unsubscribe from this list: send the line "unsubscribe linux-admin" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

Re: problems with command su

[Vladimir E. Rodriguez]

No, I don't have aliases, I have checked, but I haven't aliases.

Please could anybody could help me?

Thanks

Vladimir
On Tuesday 07 December 2004 13:16, kaushal wrote:
> Im not sure but make sure your 'su' command has not been aliased by
> someone/thing.
> [sfaf@sdf]alias
>
> If u find an entry for su there,type 'unalaias su' and it should work.
> gudlk.
> kaushal.
> rocsys.
>
> On Tue, 2004-12-07 at 21:31, Vladimir E. Rodriguez wrote:
> > Hello, I'm new user in linux community. I have installed in my computer
> > mandrake linux 10.0
> >
> > Sometime ago it was working normal without problems. After that I changed
> > the root password, always that I want to change something in the
> > configuration of the system, I run su from other user (vladimir).
> >
> > But the system says 'invalid password'. I tried the old, and new
> > password, but it doesn't work
> >
> > I have to logout, and login with root to change some configurations.
> >
> > Anyone could help me!!
> >
> > thank you
> >
> > Vladimir
> > -
> > To unsubscribe from this list: send the line "unsubscribe linux-admin" in
> > the body of a message to majordomo@vger.kernel.org
> > More majordomo info at  http://vger.kernel.org/majordomo-info.html
>
> -
> To unsubscribe from this list: send the line "unsubscribe linux-admin" in
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Re: problems with command su

[Andreas Unterkircher]

please post what happens in the logs when your "su -" command failed.

depending on your distribution you could find that according info in 
/var/log/messages,
/var/log/syslog, /var/log/secure, /var/log/auth.log,... or something 
else - sorry - don't
know exactly for mandrake....

if u have installed the ssh-daemon - can u run the command "ssh 
root@localhost"
and check if the login would succeed?

any special auth mechanism? ldap?

Andi

Vladimir E. Rodriguez wrote:

>No, I don't have aliases, I have checked, but I haven't aliases.
>
>Please could anybody could help me?
>
>Thanks
>
>Vladimir
>On Tuesday 07 December 2004 13:16, kaushal wrote:
>  
>
>>Im not sure but make sure your 'su' command has not been aliased by
>>someone/thing.
>>[sfaf@sdf]alias
>>
>>If u find an entry for su there,type 'unalaias su' and it should work.
>>gudlk.
>>kaushal.
>>rocsys.
>>
>>On Tue, 2004-12-07 at 21:31, Vladimir E. Rodriguez wrote:
>>    
>>
>>>Hello, I'm new user in linux community. I have installed in my computer
>>>mandrake linux 10.0
>>>
>>>Sometime ago it was working normal without problems. After that I changed
>>>the root password, always that I want to change something in the
>>>configuration of the system, I run su from other user (vladimir).
>>>
>>>But the system says 'invalid password'. I tried the old, and new
>>>password, but it doesn't work
>>>
>>>I have to logout, and login with root to change some configurations.
>>>
>>>Anyone could help me!!
>>>
>>>thank you
>>>
>>>Vladimir
>>>-
>>>To unsubscribe from this list: send the line "unsubscribe linux-admin" in
>>>the body of a message to majordomo@vger.kernel.org
>>>More majordomo info at  http://vger.kernel.org/majordomo-info.html
>>>      
>>>
>>-
>>To unsubscribe from this list: send the line "unsubscribe linux-admin" in
>>the body of a message to majordomo@vger.kernel.org
>>More majordomo info at  http://vger.kernel.org/majordomo-info.html
>>    
>>
>
>-
>To unsubscribe from this list: send the line "unsubscribe linux-admin" in
>the body of a message to majordomo@vger.kernel.org
>More majordomo info at  http://vger.kernel.org/majordomo-info.html
>  
>

Re: problems with command su

[Niklas Bolander]

Some systems requirers a user to be a member of the "wheel" group to be 
allowed to su.
Shouldn't be relevant since you could use it before but it might be 
worth checking out.

Vladimir E. Rodriguez wrote:

>Sometime ago it was working normal without problems. After that I changed the 
>root password, always that I want to change something in the configuration of 
>the system, I run su from other user (vladimir).
>
>But the system says 'invalid password'. I tried the old, and new password, but 
>it doesn't work
>
>I have to logout, and login with root to change some configurations.
>  
>

Re: problems with command su

[Niklas Bolander]

Odd, would you mind posting your pam configuration for su?
Should be "/etc/pam.d/su".

MSc.Vladimir E.Rodríguez wrote:

>Yes, I checked it, but it's not working.
>I run passwd for root, and changed the password nothing more, after that
>the su doesn't work.
>
>Thanks
>
>Vladimir
>Niklas Bolander said:
>  
>
>>Some systems requirers a user to be a member of the "wheel" group to be
>>allowed to su.
>>Shouldn't be relevant since you could use it before but it might be
>>worth checking out.
>>
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Re: problems with command su

[Atishay Kumar]

hi,
 try sudo command.
only users listed in /etc/sudoers are allowed to run sudo command. and
u can also specify whether to ask for root password or not. put the
following line /etc/sudoers

username        ALL=(ALL)       NOPASSWD: ALL

username above will be able to issue all commands like root and
without asking password.

see /etc/sudoers for more.

after making entry for username

try "sudo su" command. it should work if entry was for NOPASSWD

atishay
On Wed, 08 Dec 2004 01:32:52 +0100, Niklas Bolander
<niklas.bolander@telia.com> wrote:
> Odd, would you mind posting your pam configuration for su?
> Should be "/etc/pam.d/su".
> 
> MSc.Vladimir E.Rodríguez wrote:
> 
> >Yes, I checked it, but it's not working.
> >I run passwd for root, and changed the password nothing more, after that
> >the su doesn't work.
> >
> >Thanks
> >
> >Vladimir
> 
> 
> >Niklas Bolander said:
> >
> >
> >>Some systems requirers a user to be a member of the "wheel" group to be
> >>allowed to su.
> >>Shouldn't be relevant since you could use it before but it might be
> >>worth checking out.
> >>
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> 


-- 
:)
Atishay Kumar
Btech, SEM VII
DA-IICT
Gandhinagar - 382009
India
ph: +91 9825383948
/****************************************************************************
 * Learn the rules as you would need them to break them properly *
 ****************************************************************************/
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Re: problems with command su

[Andrew Kelly]

On Tue, 2004-12-07 at 17:01, Vladimir E. Rodriguez wrote:
> Hello, I'm new user in linux community. I have installed in my computer 
> mandrake linux 10.0
> 
> Sometime ago it was working normal without problems. After that I changed the 
> root password, always that I want to change something in the configuration of 
> the system, I run su from other user (vladimir).
> 
> But the system says 'invalid password'. I tried the old, and new password, but 
> it doesn't work
> 
> I have to logout, and login with root to change some configurations.
> 
> Anyone could help me!!

Just a wild guess, mind you, but that sounds like toggling keyboard 
drivers or something. As if at a login prompt a different character set was
being delivered than happens later, once you've logged in.

Try logging in as root, and changing the password to something silly 
like 111111. Then try su'ing to root as another user.

Without seeing some of the log/config info that other have requested, 
it's just a guessing game, though.

Andy