run a command on multiple OS'es via Vagrant on Virtualbox

multi-vagrant.sh

#!/bin/bash

CMD="${1:-ls -l /}"
BOXES="${2:-centos/8 generic/ubuntu1804}"
PROVIDER="${3:-virtualbox}"

LOG="$PWD/commands.log"
: > "$LOG"

TMPDIR="/tmp/$RANDOM.$$"
mkdir -p "$TMPDIR"

trap 'rm -rf "$TMPDIR"; exit 1;' EXIT INT HUP TERM

BOXLIST="$(vagrant box list | grep -F "($PROVIDER" )"
for box in $BOXES; do
  if ! grep -q "$box" <<<"${BOXLIST}" ; then
    vagrant box add "$box" --provider "$PROVIDER"
  fi
  if test $? -eq 0; then
    {
        echo -e "\n\n===  $box  ===\n"
        echo -e "DATE: $(date)"
        echo -e "CMD: $CMD\n"
    } >> "$LOG"
    (
        cd "$TMPDIR" || { echo "Hmm...Can't change directory to $TMPDIR"; exit 1; }
        vagrant init -fm "$box"
        vagrant up
        vagrant ssh --command "$CMD" | tee -a "$LOG"
        vagrant destroy -f
    )
  fi
done