Database in settings.php doesn't exist yet site is live. Where is the data? I've inherited a Drupal 6 site running on an Ubuntu 10.04.4 LTS server. I'm trying to understand the configuration of it to create a local version of it work on. 

I can't figure out how the data is being accessed. The settings file shows the following:

$db_url = 'mysql://root@localhost/drupal';
$db_prefix = 'dru_';


However when I list the databases, I can't find it:

mysql -u root
mysql&gt; show databases \g
+--------------------+
| Database           |
+--------------------+
| information_schema |
| gitpull            |
| mysql              |
+--------------------+
3 rows in set (0.01 sec)


In addition running drush status says it can't find it either.

$ drush status
SQLSTATE[42000] [1049] Unknown database 'drupal'                   [warning]


The site is up and running so it's got to have access to the database somehow. 

I figure I'm in the right directory because it's defined in /etc/apache2/sites-available and /etc/apache2/sites-enabled/

Any help would be greatly appreciated.
The hints from Tony Mao &amp; Alexei pointed me in the right direction. It turned out there were a bunch of backups in non-intuitively named folders, so I was looking in the wrong place.

I ended up finding the right settings.php file with sudo find . -name settings.php.