Manual:ClearInterwikiCache.php/en

Details
clearInterwikiCache.php is a maintenance script to clear the interwiki links for all languages in.

Options/Arguments
This script does not take any options.

Troubleshooting
If the script does not output anything it means nothing was done because you have no "local database". This problem is caused by the default value of the configuration. This behavior deserves further explanation but the quick workaround is to add your database name to that array.