#!/bin/sh
killall -0 pppd
RETURNVAL=$?
echo "Rersult code of killing running pppd is $RETURNVAL ."
echo "Trying to kill process 2345151 (probably not present.)"
kill -0 2345151 2> /dev/null
RETURNVAL=$?
echo "Rersult code of killing process that is not present is $RETURNVAL ."