topic Re: /etc/passwd corrupted in Operating System - HP-UX

/etc/passwd corrupted

achache — Tue, 23 Apr 2002 16:46:44 GMT

Hi,
I use a HP-UX B.10.20 A 9000/810.
My /etc/passwd file is corrupt and I am not abble to log on my system. I have a shell problem cause by the passwd file.
Is there a way to log on the system.
Thakns,

Re: /etc/passwd corrupted

Sandip Ghosh — Tue, 23 Apr 2002 16:48:48 GMT

Boot the system in single user mode. Do a vgchange -a y. Mount all the filesystems . And edit the passwd file as required.

Sandip

Re: /etc/passwd corrupted

Charles McCary — Tue, 23 Apr 2002 16:49:00 GMT

Yes - boot to single user mode, then re-create or restore the /etc/password file.

Re: /etc/passwd corrupted

hpuxrox — Tue, 23 Apr 2002 17:03:30 GMT

You will need access to the systems console.
Access the GSP and and reset your box.

when you see the system coming up again you can interrupt the system boot sequence (it will ask you to press any key in 10 sec to stop booting), and then after pressing the key at that stage type

hpux -is

this will take you to single user mode

vgchange -a y /dev/vg00

mount -a

then edit your password file or recover it from an ignite tape.

# mt -t /dev/rmt/0mn fsf 1
# tar -xvf /dev/rmt/0m /etc/passwd

Peace.......

Re: /etc/passwd corrupted

John Bolene — Tue, 23 Apr 2002 17:10:57 GMT

Which brings up a story.

We had one security admin that sorted the password file, guess where root ended up!! Not at the top.

You will probably have to TOC the box to get it to boot, interupt the boot at the ISL prompt, then enter bo -is

This will boot the machine in single user mode, get onto a terminal attached to the serial port, and change that root password.

After you have a good root password, you can reboot the box into multi user and then get a good password file from somewhere else.

Re: /etc/passwd corrupted

MANOJ SRIVASTAVA — Tue, 23 Apr 2002 17:21:59 GMT

Hi Achache,

Is there a way you can ftp in to the system using another 10.2 system , if yes then ftp inot /etc and copy the paswd file from the other system or you can put a file which atleast has root into that machine . if you cant do that then you will have to boot in single user miode and edit the file manually.

Manoj Srivastava

Re: /etc/passwd corrupted

David Burgess — Tue, 23 Apr 2002 18:51:27 GMT

I guess if he can't login then he won't be able to ftp in. Without the password file the login won't get authenticated.

I think single user mode will be the only option.

Re: /etc/passwd corrupted

pap — Tue, 23 Apr 2002 19:18:53 GMT

Hi,
Boot the system in to single user mode Tou have to press any key at 10 sec notification. You will get BOOT ADMIN rompt.
Then boot the system using bo command. and interect with ISL.
At ISL prompt give
ISL> hpux -is

this will boot the system in to single user mode.
Then issue mountall command. and use vi to edit the password file or restore it from backup.

thanks,
-pap