client file check

Hi everyone...

Does anyone know how the client file check works? My client is running as a non-privileged user and trying to check a file in the Postgres directory, which of course it doesn't have access to. I would let it use sudo if I could, but adding sudo to the ls command in the client config doesn't do anything. So what mechanism does the client use to do file checks?

Thanks,

Scot Kreienkamp