Which tool can be used to install wordpress on 50 domains ?

The easiest and most effective way to convert any CMS to be used
for addon domains that I?ve found is to simply edit the config files. No joke,
that?s seriously usually all it ever takes. In my wordpress wp-config.php file I
grabbed the line that declared the database:

define(?DB_NAME?, ?database1′);

I replaced it with a simple IF ELSE statement to check for the domain and
define the appropriate database:

if ( $_SERVER["HTTP_HOST"] == 'domain1.com' ) {
define('DB_NAME', 'database1');
}
elseif($_SERVER["HTTP_HOST"] == 'domain2.com'){
define('DB_NAME', 'database2');
}else {
define('DB_NAME', 'database1');
}