Как остановить GS?

#!/bin/bash

 

err=1

until [ $err == 0 ];

do

        mv log/java0.log.0 "log/`date +%Y-%m-%d_%H-%M-%S`_java.log"

        mv log/stdout.log "log/`date +%Y-%m-%d_%H-%M-%S`_stdout.log"

        mv log/chat.log "log/`date +%Y-%m-%d_%H:%M:%S`-chat.log"

        nice -n -2 java -Dfile.encoding=UTF-8 -Xms512m -Xmx512m -cp bsf.jar:javolution.jar:bsh-2.0.jar:jython.jar:c3p0-0.9.1.jar:mysql-connector-java-5.0.6-bin.jar:jbforth.jar:rrd4j-2.0.1.jar:jsr166x.jar:l2jserver.jar l2f.gameserver.GameServer > log/stdout.log 2>&1

        sleep 10;

done