who command not working in hpux 11.11

[avizen9]

HI i am having issue with who command, it doest show any output today, when i use
who -a

it showing below output not sure what is wrong, please let me know if someone got any clue here, thanks,

Empty slot.
Empty slot.
Empty slot.
Empty slot.
Empty slot.
Empty slot.
Empty slot.
Empty slot.
Empty slot.
Empty slot.
Empty slot.
Empty slot.
Empty slot.
Empty slot.
Empty slot.
Empty slot.
Empty slot.
Empty slot.

[Dennis Handly]

Your /etc/utmp* file may be corrupted.

[avizen9]

how to re-create that file, what exectly the command is?

[SKR_1]

What is the output of

who -u
who -r

Thanks

SKR

[avizen9]

who -u = no output
who -r = can get out put with run leve etc. info,

who -d also working fine.

[VK2COT]

Hello,

a) Do you have patch PHNE_36196 installed (original patch was PHNE_24829)? That patch
deals with telnet kernel and telnetd and
fixes issues that caused telnet to corrupt
/etc/utmp as well.

b) Stopping and starting utmpd might help:

/sbin/init.d/utmpd stop
/sbin/init.d/utmpd start

c) Some workarounds have involved bringing
the system down to single user mode, and then:

# cat /dev/null >/etc/utmp[x]

... and rebooting. This requires manual
intervention.

Cheers,

VK2COT

[Dennis Handly]

>how to re-create that file, what exactly the command is?

The file is not there?
Just touch the file and make it owned by root:sys and writable by the owner and readable by any.

[Dennis Handly]

Here are the permissions of my /etc/utmp* files:
-rw-r--r-- 1 root root 2580 Jan 5 06:31 /etc/utmp
-rw-r--r-- 1 root root 8260 Jan 5 06:31 /etc/utmpx

If utmpx doesn't have size 0, you might be able to write a program to convert to the utmp format.

[avizen9]

HI all,
file permission is correct,
i can not reboot server,
i could not found /sbin/init.d/utmpd in my server,

any other clue? thanks,

[Dennis Handly]

>file permission is correct

What are the file sizes?

>I could not found /sbin/init.d/utmpd in my server

utmpd(1M) is only there on 11.23 and later.