Minecraft Server startet nicht

#!/bin/bash




while test $# -gt 0; do
 case "$1" in
 "-IP")
    IP="$2"
    shift;;
 "-PORT")
    PORT="$2"
    shift ;;
 "-PLAYER")
    PLAYER="$2"
    shift ;;
 "-RAM")
    RAM="$2"
    shift ;;
 esac
 shift
done


## kill den alten port =)
if [ ! -f minecraft_server.pid ]; then
  echo ""
else 
  pid=`cat minecraft_server.pid`
  kill -KILL $pid
  rm -rf minecraft_server.pid
fi


## serversettings
grep server-ip= server.properties &>/dev/null
if @@c4e67ee95c026dca1e356c8b17f133132ba22b53@@; then  # Vorhanden!
  sed -i server.properties -e "s/^\(server-ip=\).*$/\1${IP}/"
else  # Nicht vorhanden!
  echo "server-ip=${IP}" >> server.properties
fi


grep server-port= server.properties &>/dev/null
if @@b1be5596a46e6ce00236b3f6f8688fcc55f287df@@; then  # Vorhanden!
  sed -i server.properties -e "s/^\(server-port=\).*$/\1${PORT}/"
else  # Nicht vorhanden!
  echo "server-port=${PORT}" >> server.properties
fi


grep max-players= server.properties &>/dev/null
if @@380469503692c74823b3585d816e6d7bfa05950f@@; then  # Vorhanden!
  sed -i server.properties -e "s/^\(max-players=\).*$/\1${PLAYER}/"
else  # Nicht vorhanden!
  echo "max-players=${PLAYER}" >> server.properties
fi


java -Xmx"$RAM"M -Xms"$RAM"M -jar minecraft_server.jar nogui $IP $PORT