Code:
java $2 $3 -jar craftbukkit-1.1.jar nogui $1 &
sleep 2
ps -ef | grep -v grep | grep 'SCREEN -m -D -A -S Minecraft Server' | grep $1 |awk ' { print $2 }' > port"$1".pid
# screen -list | grep "Minecraft Server" | grep $1 | awk '{ print $1 }' | awk -v 'FS=.' '{print $1}' > port"$1".pid
funzt bei mir