It's crude and rude, but all I need for now. Give me all links off the main menu, so that I can use the resulting link list for creating site crawlers for QA

get-main-menu.drush

#!/usr/bin/env drush

// let user pass menu machine name
$arg = drush_shift();
print ( $arg );

// assign a default menu name
if ( empty($arg) ) {
  $arg = "main-menu";
}

// Grab the links for main menu, our standard nav element
$tree = menu_load_links($arg);
foreach($tree as $key=>$menuItem) {
  // We only care about the menu link
  // Alias it while you're at it
  $aPath = drupal_get_path_alias($menuItem['link_path']);
  // It's possible to have external URLs in a menu tree
  // we don't care about these
  $hasHttp = stripos( $aPath, "http" );
  if ( $hasHttp !== 0 ) {
    // "<front>" won't work
    if ( $aPath === "<front>" ) {
      $aPath = "";
    }
    print( "/" . $aPath . "\xA" );
  }
}