#!/bin/bash
if [[ -z $1 ]]; then
    echo 'all or vm-name'
fi

typeset -a machines
if [[ $1 = 'all' ]]; then
    machines=$(vboxmanage list runningvms | awk '{print $1}' | sed 's/"//g' )
else
    machines=("$@")
fi

for i in ${machines[@]}; do
    snapshot=$(vboxmanage snapshot $i list | sed -n 1p | awk '{print $2}')
echo -e " \033[0;36m \n vm ${i} snapshot ${snapshot} \033[0m "
if [[ $2 = 'stop' ]]; then
    vboxmanage controlvm $i poweroff
    sleep 1
else
    vboxmanage controlvm $i poweroff
    sleep 2
    vboxmanage snapshot $i restore "$shapshot"
    sleep 2
    vboxmanage startvm $i
fi
done