stop ()
{
    /bin/ps > ./tfile
    t=`/bin/grep "$1" ./tfile`
    pid=`echo $t | /usr/bin/awk '{print $1}'`
    if [ -z $pid ]
    then
        echo null > /dev/null
    else
        /bin/kill -9 $pid
        /bin/sleep 2
    fi
    echo $pid
    rm ./tfile
}