topic Re: root passwor lost in Operating System - HP-UX

root passwor lost

aruns_s — Wed, 04 Jan 2006 23:35:19 GMT

Hi,
i forgot root password in one of the server.I can login as a normal user and use sudo to get root access.However, whwn I am trying to cahnge root password, it is asking for old root password which I forget
Please help how can I solve this with out rebooting the server.

regards
Arun

Re: root passwor lost

A. Clay Stephenson — Wed, 04 Jan 2006 23:41:59 GMT

explicitly execute /sbin/passwd root

Re: root passwor lost

aruns_s — Wed, 04 Jan 2006 23:46:40 GMT

HI
If am using passwd root, it is asking for the old root password which I could not recall.Any other means?

regards
Arun

Re: root passwor lost

A. Clay Stephenson — Thu, 05 Jan 2006 00:07:42 GMT

Then you will need to boot the box in single-user mode. You will then be root and can set the passwd.

Re: root passwor lost

Adisuria Wangsadinata_1 — Thu, 05 Jan 2006 00:09:32 GMT

Hi,

If you're not using trusted system, just simply edit /etc/passwd file (NOTE : copy first /etc/passwd to other directory for backup).

FROM :

root:8nvuu.Ki4lSO2:0:3::/:/sbin/sh

TO :

root::0:3::/:/sbin/sh

And after that, run command below :

# passwd root

Hope this information can help you.

Cheers,
AW

Re: root passwor lost

njia_1 — Thu, 05 Jan 2006 00:11:29 GMT

Hi there

you said you can have root access by "sudo" here is a quick solution.

get root access and make sure you have write access to /etc/shadow file.

copy & paste the encrypted passwd from another system to this one

For example if this is the root entry in /etc/shadow of the system you have forgoten root passwd. Then just replace the "$1$t....AWPv/" part.

root:$1$tGqE/hYd$ijdjPK645e/MrlkDFAWPv/:12192:0:99999:7:::

if you do not have write access to /etc/shadow file, can you reboot it to single user mode ? then you should be able to change root passwd.

Re: root passwor lost

njia_1 — Thu, 05 Jan 2006 00:18:48 GMT

Hi there

regarding my previous reply, if your system is not a trusted sytem yet then you just need to change /etc/passwd file not /etc/shadow file.

thanks

Re: root passwor lost

aruns_s — Thu, 05 Jan 2006 02:42:36 GMT

Hi
last I got the solution.
In a trusted system, individual password files are stored on /tcb/files/auth/r directory with a file name root.remove password field from this field as well as /etc/passwd.then we can issuew passwd command.thanks for all help.

regds
ARun

Re: root passwor lost

Indrajit_1 — Thu, 05 Jan 2006 08:18:27 GMT

Hi;

You need to work in ISL mode to change ur password.. Do the following steps..

Reboot the machine and press Esc buttom in ur key board..

From the menu screen press a to go the administration access..

type boot isl pri

press yes ..

type..

hpux -is

it will take u to single user mode .. u can now change ur password..

passwd root ( change the root password)

Hope this will resolve ur issue.

cheers
indrajit