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Full Discussion: Killing process and children
Top Forums Shell Programming and Scripting Killing process and children Post 302283088 by quirkasaurus on Monday 2nd of February 2009 02:00:49 PM
Old 02-02-2009
Quote:
Originally Posted by mark007
Hi

Thank you but the problem here is, my main calling script that begins the rsh, when it receives the kill command, it actually sits and waits for the rsh to fully complete before it enters the killemall function.

If the rsh command takes one hour, then the kill will take one hour to start the killemall function.

Any ideas on how to get around this? I am sure it is designed like this, ie finish the line of code currently being run before running the code specified in "trap". Unfortunately this is not desirable for me as I need it to quit immediately without finishing the current line aka rsh machineb........

Did you try my second suggestion?

I tried fooling around with this concept:

On the remote machine, the main script is called "clam":

Code:
echo $$ > pid
while : ; do
date
sleep 10
done > date_log

On the remote machine, there's a kill-script called "duck":

Code:
(
echo looking for clam process
ps -deaf | fgrep clam
echo killing it:
kill -2 `cat pid`
kill -3 `cat pid`
kill -9 `cat pid`
echo checking again:
ps -deaf | fgrep clam
echo done
) > duck.log 2>&1

On the main host, there's a script called "fish":

Code:
trap 'echo trapped signal; rsh sun03 duck; exit 1' 2 3
rsh sun03 'clam &' &
echo back from sun03
echo waiting now...
wait

I think this covers everything.
 

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LEARN ABOUT DEBIAN

service

service(8)						      System Manager's Manual							service(8)

NAME

       service - run a System V init script

SYNOPSIS

       service SCRIPT COMMAND [OPTIONS]

       service --status-all

       service --help | -h | --version

DESCRIPTION

       service	runs a System V init script in as predictable an environment as possible, removing most environment variables and with the current
       working directory set to /.

       The SCRIPT parameter specifies a System V init script, located in /etc/init.d/SCRIPT.  The  supported  values  of  COMMAND  depend  on  the
       invoked	script.  service passes COMMAND and OPTIONS to the init script unmodified.  All scripts should support at least the start and stop
       commands.  As a special case, if COMMAND is --full-restart, the script is run twice, first with the stop command, then with the start  com-
       mand.

       service --status-all runs all init scripts, in alphabetical order, with the status command.

EXIT CODES

       service calls the init script and returns the status returned by it.

FILES

       /etc/init.d
	      The directory containing System V init scripts.

ENVIRONMENT

       LANG, TERM
	      The only environment variables passed to the init scripts.

SEE ALSO

       /etc/init.d/skeleton,
       update-rc.d(8),
       init(8),
       invoke-rc.d(8).

								     Jan 2006								service(8)
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