Do I have root privileges? Am I inside the Vagrant VM?

root-and-inside-vm.sh

# Do I have root privileges?
# Also known as: Am I running with sudo?

if [ $EUID -ne 0 ]; then
   echo "You must run the script as root or using sudo"
   exit 1
fi


# Am I inside the Vagrant VM?

if [ "$SUDO_USER" != "vagrant" ]; then
    echo "You must be in a VM to run me"
    exit 1
fi