VirtualBox add/remove NAT rules

vbox-nat.sh

#!/bin/sh
#
# vbox-nat
#
# VirtualBox add/remove NAT rules.
#
# Author: Mariano Ruiz <mrsarm@gmail.com>
#
# License GPLv3 (2011-2013)
#


#
#  Usefull VM commands:
#
#     vboxmanage list [vms|runningvms]
#     vboxmanage startvm "NAME" [--type headless]
#     vboxmanage controlvm "NAME" [acpipowerbutton|poweroff|pause|resume]
#     vboxmanage modifyvm "NAME" [--autostart-enabled [on|off]]
#     vboxmanage modifyvm "NAME" [--autostart-delay SENCONDS]
#     vboxmanage modifyvm "NAME" [--autostop-type disabled|savestate|poweroff|acpishutdown]
#     vboxmanage clone "NAME" [--name CLONENAME]
#     vboxmanage registervm "NAME"
#     vboxmanage export "NAME" -o "NAME.ova"
#


#DEVICE="pcnet"
#DEVICE="pcbios"
DEVICE="e1000"

if [ -n "$3" -a "$1" = "remove" ]; then
  LINUX_GUEST="$2"
	NAME_SERVICE="$3"
	vboxmanage setextradata "$LINUX_GUEST" "VBoxInternal/Devices/$DEVICE/0/LUN#0/Config/$NAME_SERVICE/Protocol"
	vboxmanage setextradata "$LINUX_GUEST" "VBoxInternal/Devices/$DEVICE/0/LUN#0/Config/$NAME_SERVICE/GuestPort"
	vboxmanage setextradata "$LINUX_GUEST" "VBoxInternal/Devices/$DEVICE/0/LUN#0/Config/$NAME_SERVICE/HostPort"
	exit 0
fi

if [ -n "$5" -a "$1" = "add" ]; then
	LINUX_GUEST="$2"
	GUEST_PORT="$3"
	HOST_PORT="$4"
	NAME_SERVICE="$5"
	vboxmanage setextradata "$LINUX_GUEST" "VBoxInternal/Devices/$DEVICE/0/LUN#0/Config/$NAME_SERVICE/Protocol" TCP
	vboxmanage setextradata "$LINUX_GUEST" "VBoxInternal/Devices/$DEVICE/0/LUN#0/Config/$NAME_SERVICE/GuestPort" $GUEST_PORT
	vboxmanage setextradata "$LINUX_GUEST" "VBoxInternal/Devices/$DEVICE/0/LUN#0/Config/$NAME_SERVICE/HostPort" $HOST_PORT
	exit 0
fi

echo "Use: $0 {remove LINUX_GUEST NAME_SERVICE | add LINUX_GUEST GUEST_PORT HOST_PORT NAME_SERVICE}"
exit 2