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Full Discussion: Trap killing PID
Top Forums Shell Programming and Scripting Trap killing PID Post 302980843 by Scrutinizer on Saturday 3rd of September 2016 02:49:53 AM
Old 09-03-2016
I don't think you can do that easily in a shell script.

But if you control the killing process you can have it transfer its PID to the process that is to be killed, through a named pipe in /tmp for example:

Code:
#!/bin/ksh

hello () {
print "in hello";
read killproc < "$pipe"
print "PID of process that issued SIGNAL: $killproc"
exit
}

pipe=/tmp/killerproc.$$
mkfifo $pipe
trap "rm -f $pipe" EXIT
trap hello SIGKILL SIGTERM


while true
do
  print "in loop of process $$";
  sleep 1;
done

And then kill the process with something like this:

Code:
# killpid=<pid of process to be killed>
pipe=/tmp/killerproc.$killpid
kill "$killpid" ; echo $$ > $pipe

This would need to be refined, but you get the idea.
Last edited by Scrutinizer; 09-03-2016 at 05:21 AM..
This User Gave Thanks to Scrutinizer For This Post:
Gajendra_PH
 

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LEARN ABOUT DEBIAN

explain_pipe_or_die

explain_pipe_or_die(3)					     Library Functions Manual					    explain_pipe_or_die(3)

NAME

       explain_pipe_or_die - create pipe and report errors

SYNOPSIS

       #include <libexplain/pipe.h>
       void explain_pipe_or_die(int *pipefd);

DESCRIPTION

       The  explain_pipe_or_die  function  is used to call the pipe(2) system call.  On failure an explanation will be printed to stderr, obtained
       from explain_pipe(3), and then the process terminates by calling exit(EXIT_FAILURE).

       This function is intended to be used in a fashion similar to the following example:
	      explain_pipe_or_die(pipefd);

       pipefd  The pipefd, exactly as to be passed to the pipe(2) system call.

       Returns:
	       This function only returns on success.  On failure, prints an explanation and exits.

SEE ALSO

       pipe(2) create pipe

       explain_pipe(3)
	       explain pipe(2) errors

       exit(2) terminate the calling process

COPYRIGHT

       libexplain version 0.52
       Copyright (C) 2009 Peter Miller

															    explain_pipe_or_die(3)
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