#!/bin/bash
#_term() {
#    echo "$0 caught SIGTERM signal!"
#    trap - SIGTERM
#    kill -TERM $child $$
#}

launch_job() {
    PARENT=$1
    shift
    "$@" &
    CHILD=$!
    trap "trap - SIGTERM; kill -TERM $CHILD $$" SIGTERM

    while sleep 1; do
	if [ ! -e /proc/$PARENT ]; then 
	    echo "Parent PID $PARENT disappears, terminating child $CHILD"
	    kill -TERM $CHILD
	    exit
	fi

	if [ ! -e /proc/$CHILD ]; then
	    wait $CHILD
	    trap - SIGTERM
	    exit $?
	fi
    done
}

#trap _term SIGTERM
#launch_job $$ "$@" &
#echo "$0 Waiting for $! to finish"
#wait $!

launch_job $PPID "$@"