Unix Tip: KILL REALLY DOES NOT KILL

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

UNIX GURU UNIVERSE
UNIX HOT TIP

Unix Tip 2433 - August 30, 2005

http://www.ugu.com/sui/ugu/show?tip.today

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

KILL REALLY DOES NOT KILL

kill is not really meant only to kill a process. But main intention is to send a signal to process.And the process handles these signals to do various tasks.

kill -INT 1234
#where 1234 is the Process ID is really, this set an interrupt signal, Ctrl-C is an example of interupt signal given to shell.

kill -HUP 1234
#some UNIX daemons handle this, to do refreshing business.

kill -KILL 1234
This is the sure kill,which cannot be handled by any process. Also know as, kill -9 1234.

Just, check the in the file /usr/include/sys/signal.h for all signals on the system.

More about this can be found on kill and signal man pages.

This tip generously supported by: dkotian1@rediffmail.com

--------------------------------------------------------------------------
To Subscribe: http://www.ugu.com/sui/ugu/show?tip.subscribe
To Unsubscribe: http://www.ugu.com/sui/ugu/show?tip.unsubscribe
To Submit A Tip: http://www.ugu.com/sui/ugu/show?tip.today

==========================================================================
DISCLAIMER: All UNIX HOT TIPS ARE OWNED BY THE UNIX GURU UNIVERSE AND ARE
NOT TO BE SOLD, PRINTED OR USED WITHOUT THE WRITTEN CONSENT OF THE UNIX
GURU UNIVERSE. ALL TIPS ARE "USE AT YOUR OWN RISK". UGU ADVISES THAT
ALL TIPS BE TESTED IN A NON-PRODUCTION DEVELOPMENT ENVIRONMENT FIRST.

Unix Guru Universe - www.ugu.com - tips@ugu.com - Copyright 1994-2001
==========================================================================