code: def upgrade(refresh=True):
      '''
      Upgrade all of the packages to the latest available version.
  
      Returns a dict containing the changes::
  
          {'<package>': {'old': '<old-version>',
                         'new': '<new-version>'}}
  
      CLI Example:
  
      .. code-block:: bash
  
          salt '*' pkgutil.upgrade
      '''
      if salt.utils.data.is_true(refresh):
          refresh_db()
  
      old = list_pkgs()
  
      # Install or upgrade the package
      # If package is already installed
      cmd = '/opt/csw/bin/pkgutil -yu'
      __salt__['cmd.run_all'](cmd)
      __context__.pop('pkg.list_pkgs', None)
      new = list_pkgs()
      return salt.utils.data.compare_dicts(old, newf upgrade(refresh=True):
      '''
      Upgrade all of the packages to the latest available version.
  
      Returns a dict containing the changes::
  
          {'<package>': {'old': '<old-version>',
                         'new': '<new-version>'}}
  
      CLI Example:
  
      .. code-block:: bash
  
          salt '*' pkgutil.upgrade
      '''
      if salt.utils.data.is_true(refresh):
          refresh_db()
  
      old = list_pkgs()
  
      # Install or upgrade the package
      # If package is already installed
      cmd = '/opt/csw/bin/pkgutil -yu'
      __salt__['cmd.run_all'](cmd)
      __context__.pop('pkg.list_pkgs', None)
      new = list_pkgs()
      return salt.utils.data.compare_dicts(old, new)
docs: Upgrade all of the packages to the latest available version.
  
      Returns a dict containing the changes::
  
          {'<package>': {'old': '<old-version>',
                         'new': '<new-version>'}}
  
      CLI Example:
  
      .. code-block:: bash
  
          salt '*' pkgutil.upgrade