Deletes everything from Virtualbox. Usefull for CI/CD

purgeVirtualbox.sh

# loop over all existing VMs
for i in $(VBoxManage list vms | sed 's/.*{\(.*\)}/\1/g'); do 
  # power them off and delete them
  VBoxManage controlvm $i poweroff && VBoxManage unregistervm $i;
  # delete everything left
  rm -rf ~/VirtualBox VMs
done;