topic Kick/kill all users command? in Operating System - Linux

Kick/kill all users command?

Robert Nolan — Thu, 09 Dec 2004 07:14:49 GMT

Is there a command I can use to kill all users on RH? Or do I have to run a script to gather all the PIDs, then kill each one wih kill -9?

I need to do a reboot and although that will obviously kill all processes, I was hoping to kill the users first to do some maintenance.

Any feeback greatly welcomed.
Regards,
Rob

Re: Kick/kill all users command?

Georg Tresselt — Thu, 09 Dec 2004 07:28:44 GMT

In my view, the answer is in your question. Everyone will be logged off when the system shuts down. What would be nice of you to do is sending a warning to the users by mail or wall before you take action.

Re: Kick/kill all users command?

Robert Nolan — Thu, 09 Dec 2004 07:33:21 GMT

Ye, thanks good call, however, I would rather kick all the users and then reboot later. So, is there a command I can use to kick all users?

Re: Kick/kill all users command?

xyko_1 — Thu, 09 Dec 2004 07:41:27 GMT

Hi Robert,

try to change to init 1

#init 1

and in the system console make your maintenace before reboot.

This will solve your problem, I guess.

regards,
xyko

Re: Kick/kill all users command?

Chris Xu — Thu, 09 Dec 2004 10:21:12 GMT

I would agree with xyko on changing your system to single user mode if you really want no users on your system. You can kill a user logon, but another user can always log on without knowing you are doing the maintenance. That said, there is command to kill a user, but all users at one shot. It's fuser. Check man page for necessary switches.

Chris

Re: Kick/kill all users command?

Balaji N — Fri, 10 Dec 2004 11:59:36 GMT

su - $user -c kill -9 -1

-balaji

Re: Kick/kill all users command?

Yong_7 — Fri, 10 Dec 2004 14:36:50 GMT

Hi,

I think you know you can shut the road down as root by stop the various services like telnet, ftp http etc.( # service telnetd stop ) that will keep you in multiuser mode if that's what you need to stay.

what i usually do is " #wall " people first, friendly ;-), then go to sigle user mode.

YJ.

Re: Kick/kill all users command?

Bharat Katkar — Mon, 13 Dec 2004 08:58:38 GMT

Hi Rob,
Here are some scripting guideline for killing all users and thier processes:

1. use "ps -ef" and grep on 6th field (use cut) and get ttynames.
2. ps -t and grep on process ID's and collect process ID's
3. kill -9

Hope that helps.
Regards,