NBDeployUtil Batch script

Hello, 

I am working on creating a BATCH script to run NBDeployUtil. At first this seems like it would be a straightforward process, but I ran in to a snag. It seems with NBDeployUtil you can set the directory for the --gather command via the --output=directory argument, but the output file name will still be variable. So when using the --report argument you need the --gather output filename. 

Is there a way to set the name of the --gather output file, or has anyone found a way to address vairable --gather output names within a batch file?

Thanks in advance for your advice.