This script displays vagrant index_uuid for each VM created with Vagrant (macOS)

vagrant-uuids.sh

#!/bin/bash
vms=$(vagrant global-status | awk -F " " '{ print $5 }' | grep Users)
for vm in $vms
do
  if [ -d "$vm" ]; then
    cat $vm/.vagrant/machines/default/virtualbox/index_uuid
    echo " $vm"
  fi
done

It is useful when you want to remove a vagrant box, but this box is still used by a VM. In this case, Vagrant informs you by displaying the VM uuid, but not its name. This script displays the corresponding VM name.