Here are the details for executing an RPT schedule from a command line (without GUI).
IBM® Rational® Performance Tester schedules or tests can be executed from the command line outside of the Eclipse Workspace.
-results Optional. The name of the results file. The default result file is the schedule or test name with a time stamp appended.
-overwrite Optional. Determines whether a results file with the same name is overwritten. The default value, true, means that the results file is overwritten.
-exportlog Optional. The complete path to a file in which to store the exported HTTP test log.
-exportstats Optional. The complete path to a directory in which to store exported statistical report data. The statistical report data is stored in comma-separated values (CSV) format, with the file name derived from the report name. "If the -exportstatreportlist option is not specified, the reports specified on the Export Reports page of the Performance Test Report preferences are exported".It says : If the -exportstatreportlist option is not specified, the reports specified on the Export Reports page of the Performance Test Report preferences are exported.
-exportstatreportlist Optional. A comma-separated list of absolute paths to custom report format files (.view files) to use when exporting statistical report data with the -exportstats option. This parameter overrides workspace preferences. For example, -exportstatreportlist c:/customreport.view,c:/customreport2.view.