dCache is commonly deployed with the BDII. The information provider within dCache publishes information to BDII. To querying the dCache BDII is a matter of using the standard command ldapsearch. For grid the standard ldap port is set to 2170 from the previous value of 2135.
[user] $ldapsearch -x -H ldap://localhost:2170 -b mds-vo-name=resource,o=grid > /tmp/ldap.output.ldif[user] $wc -l /tmp/ldap.output.ldif205 /tmp/ldap.output.ldif