KILL PID, intern should kill another PID.

Shell Programming and Scripting
1

Hi All,

In my project i have two process runs in the back end.
Once i start my project, and execute the command ps, i get below output:

PID TTY TIME CMD
9086 pts/1 0:00 ksh
9241 pts/1 0:02 java
9240 pts/1 0:00 shell_script_bg

java with 9241 PID is the main process which runs my whole application.
if i have to say in one word, java process has the whole control of my app.

shell_script_bg with 9241 PID is the shell script, which starts the java command.

If i kill the java PID with kill -9 9241 , which shuts my complete application. But if i kill shell_script_bg pid, it not making my application go down.

My requirement is if i kill one PID it should intern kill java PID as well.
what r the changes i need to make in my shell script or any where else.

This is an urgent requirement. plz help me.

Regards,
Ravi.

2

Try with SIGTERM:

kill <shell_script_pid>

(kill sends SIGTERM -15- by default)
Regards.

3

thanks grial,

i think i had not explained in a proper way.

PID TTY TIME CMD
9086 pts/1 0:00 ksh
9241 pts/1 0:02 java
9240 pts/1 0:00 shell_script_bg

i mean to say if i kill the PID 9240 which belong to shell_script_bg, this intern should kill java PID 9241.

i killed the process shell_script_bg using kill -9 9240, shell_script_bg is the shell script code,

now my question is what is the code change i have to make in shell script, so that if i kill it's process ID then that should kill some other process ID (java's)internally.

4

Hello,

You can have this small script and include that at the end of your shell script

ps > input_ps
var=`grep java input_ps|cut -d" " -f1`
kill -9 $var

See if this helps....

K Regards,
Aparna

5

It was clear the first time :slight_smile:

What I'm telling you is to use
"kill -15 <script_pid>"
instead of
"kill -9 <script_pid>".