topic control kill in Operating System - Linux

control kill

Alexander Balladares — Tue, 22 Aug 2006 15:34:52 GMT

I need to restrict the use of the [kill] to certain users.

please ,help me, if you know

Re: control kill

IT_2007 — Tue, 22 Aug 2006 16:00:54 GMT

If you already setup sudoer's file then restrict them through it.

Re: control kill

A. Clay Stephenson — Tue, 22 Aug 2006 16:09:53 GMT

You need to better define your problem. Note that kill is both a shell built-in and a command so that sudo would really only be effective with the command. Kill is already a restricted command and a normal user cannot signal other users' processes. Are you trying to give non-superusers the ability to terminate processes that are not their own? If so this is a potentially very dangerous situation. Note that kill is a perfectly normal command and does not necessarily terminate a command but rather signals a process and then the behavior is determined by whatever signal handler is in place for that signal for that process.

Re: control kill

Alexander Balladares — Tue, 22 Aug 2006 16:13:46 GMT

I don't know feature named "sudoer's ".

sorry, about my writer, I understand a little ingles.

Re: control kill

inventsekar_1 — Tue, 22 Aug 2006 16:14:06 GMT

As per knowledge that is not possible.
kill resides in /usr/bin/kill only. there may be a reason for that. [ the reason for that is, logically i think, it cant kill important processes.]

this is Clay's nice response in a thread:
"Kill is perhaps the worst named system call and command in UNIX. It should really be called something like "sendsignal" --- that's all a kill actually is. If a process (like yours) is waiting on a higher-priority event such as an i/o operation, it will never respond to a signal until the higher priority event is satisfied".

also, important processes wont allow to kill by non-root users atleast.(i think)

Re: control kill

A. Clay Stephenson — Tue, 22 Aug 2006 16:24:34 GMT

If you really want to do this then install this package, sudo, and then configure it so that certain users can run /usr/bin/kill as root:

http://hpux.cs.utah.edu/hppd/hpux/Sysadmin/sudo-1.6.8p9/

However, this a a very dangerous practice in any but very experienced hands.

Re: control kill

Rene Mendez_4 — Tue, 22 Aug 2006 16:42:24 GMT

Hello Alexander

The request is ?

The user root is allow use "kill" command and

When other user execute the command "kill", no work the command ?

You crontab have scripts with kill command and this working but no user execute the command?

Regards
Rene