Set screen resolution on Virtualbox (host machine)

host_vbox_custom_resolution.sh

#!/bin/sh

if [ -z "$1" ] || [ -z "$2" ]; then
	echo "Pass VBox machine name and screen resolution"
	echo "Example: 'OpenBSD New' '1920x1080x32'"
	exit 1
fi

VBoxManage setextradata "$1" CustomVideoMode1 "$2"

result=`VBoxManage getextradata "$1" CustomVideoMode1`

case "$result" in
*$2*) VBoxManage getextradata "$1" CustomVideoMode1 && echo success;;
*       ) echo failure ;;
esac