for U in adam baker charlie delta; do
  DB="${U}_wordpress"
  echo "Database: $DB"
  sudo -H mysql -D $DB -e "
    SELECT u.user_login, u.user_registered, um.meta_value
    FROM wp_users u INNER JOIN wp_usermeta um ON (u.id = um.user_id)
    WHERE um.meta_key = 'wp_capabilities'
    ORDER BY u.user_registered DESC"
  echo ""
done


The output will show the most recently created user accounts for each WordPress installation. Apparently the current worm creates an administrator account called “Administrator (2)” that is used to login and make changes to the site. I don’t know if that string appears in the nickname field, or what, so I didn’t query for it explicitly.