VirtualBox multi-attach

EXAMPLE

>>> time ( up vm1; up vm2; )
Virtual machine 'vm1' is created and registered.
UUID: 66e775d6-8c91-4cf1-8c20-742687f22399
Settings file: '/Users/michaelmaltese/VirtualBox VMs/vm1/vm1.vbox'
Waiting for VM "vm1" to power on...
VM "vm1" has been successfully started.
Virtual machine 'vm2' is created and registered.
UUID: 8e073076-94ef-42b4-b64f-56f1ac836d6c
Settings file: '/Users/michaelmaltese/VirtualBox VMs/vm2/vm2.vbox'
Waiting for VM "vm2" to power on...
VM "vm2" has been successfully started.

real	0m11.312s
user	0m0.329s
sys	0m0.192s

gistfile1.sh

function connect_hdd() {
  local vm="$1"
  local disk="$2"

  if test -z "$(VBoxManage list hdds | grep ${disk}$)"; then
    local attachopts="--mtype multiattach"
  fi
  VBoxManage storagectl $name --name sata1 --add sata
  VBoxManage storageattach $vm --storagectl sata1 --port 0 --device 0 --type hdd --medium $disk $attachopts
}

function up() {
  local name="$1"
  VBoxManage createvm --name $name --ostype Ubuntu_64 --register
  VBoxManage modifyvm $name --nic1 nat --natdnspassdomain1 on
  VBoxManage modifyvm $name --memory 386
  connect_hdd $name base.vmdk
  VBoxManage startvm $name
}