config.vm.provision "shell" do |s|
  s.inline = <<-SHELL
    <shell code>
  SHELL
end

==> default: mesg:
==> default: ttyname failed
==> default: :
==> default: Inappropriate ioctl for device

# Prevent TTY Errors (copied from laravel/homestead: "homestead.rb" file)... By default this is "bash -l".
config.ssh.shell = "bash -c 'BASH_ENV=/etc/profile exec bash'"

mesg n || true

test -t 0 && mesg n

config.ssh.shell="bash"