Output the total number of currently running VirtualBox VMs, along with their names. This has been written with Vagrant in mind, where VMs are named `hostname_default_xxxxxxxxx` where only the value of `hostname` is relevant/recognisable.

vbox-status-check.sh

#!/bin/bash

machines=()

for machine in `VBoxManage list runningvms|cut -d" " -f 1`; do
  machines+=("$machine")
done

if [ ${#machines[@]} -eq 1 ]; then
  machinename=$(echo ${machines[@]} | cut -d'_' -f 1)
  echo "1 VM running: $machinename"
elif [ ${#machines[@]} -gt 1 ]; then
  echo "${#machines[@]} VMs running:"
  for machine in ${machines[@]}; do
    machinename=$(echo ${machine} | cut -d'_' -f 1)
    echo "$machinename\""
  done
else
    echo "No VMs running"
fi

Great job. I tried to get it to erase the prompt so that it wouldn't track up the terminal after you reach the bottom. On my mac it didn't support the erase commands though unfortunately.

Thanks for the tput related help @jcreasey!

I'll soon be looking at implementing this alongside Vagrant 1.6's 'global status' feature (rather than relying on VBox): http://www.vagrantup.com/blog/feature-preview-vagrant-1-6-global-status.html