drush perm-grant gives "The drush command 'perm-grant' could not be found" I am using drush -u 15 perm-grant --roles="site administrator" but the command returns:


  The drush command 'perm-grant' could not be found.


any ideas about that? according this documentation the drush perm-grant is an available command. or maybe is some limitation of the user used to run drush?

the drush version is 5.4

thanks.
according @MDP, Permissions API module is required for this, and according its module page is only for Drupal 6, so this command is not available in drupal 7. @greg_1_anderson user recommends to use Drush 8.x-6.x to get this feature working built-in