old_contents: from StringIO import StringIO
  from fabric.api import local, task, run, env, sudo, get
  from fabric.tasks import execute
  from fabric.context_managers import lcd, hide
  
  
  @task
  def apt_update():
      with hide('stdout'):
          sudo('apt-get update')
          sudo('apt-get -y upgrade')
new_contents: from StringIO import StringIO
  from fabric.api import local, task, run, env, sudo, get
  from fabric.operations import reboot
  from fabric.tasks import execute
  from fabric.context_managers import lcd, hide
  
  
  @task
  def apt_update():
      with hide('stdout'):
          sudo('apt-get update')
          sudo('DEBIAN_FRONTEND=noninteractive apt-get -y -o Dpkg::Options::="--force-confdef" -o \
          Dpkg::Options::="--force-confold" upgrade')
      reboot()
  
subject: Add apt-get upgrade without grub-install