cataching SIGKILL using trap

[itai weisman]

hi everyone,
I'm trying to catch a '9' signal using the following command -
trap "Clean ; Killed " 1 3 4 5 9 15 INT QUIT TSTP KILL
on a regular simple bourne shell script,
but it wouldn't catched...
is it possible to catch KILL signal by trap command?

[Alex Lavrov. · Accepted solution]

It's impossible.

SIGKILL cannot be trapped, otherwise it loses it's purpose to kill things.

Alex.

[A. Clay Stephenson]

Get used to disappointed. If you do a man 2 signal (the underlying mechanism for traps), you will find that SIGKILL can neither be caught or ignored.

[Torsten.]

You may perhaps ignore a red traffic light, but your processes will never ignore a SIGKILL.

[itai weisman]

thanks

[Alex Lavrov.]

Assiging points to the people that helped you, can be a very nice gesture .....

Alex.