Ldapsearch utility

Hi,

I am running ldapsearch command line utility to search entries in
iPlanet Directory Server 5.1. I am not being able to use option -f to
provide filter. When I provide filter along with other command line
parameters, I am able to get entries from DS. But on trying to put the
same filter in a file and providing filename with -f option, I dont
see any entries appearing on the screen.

Please see below the results returned by the tool

ldap_init( ps0428, 6001 )
filter pattern: %s
returning: ALL

Filterfile has simple filter with no error on it as the same filter is
giving results on trying at command line itself.

Any help in this regard will be highly appreciated.

Thanks and Regards
Bhawna