-f
[1] -f is an option, which may be passed to the OpenLink Request Broker or Virtuoso server at startup.
This option causes either service to write debug information to the screen.
Example: ./oplrqb -f
See Also: +foreground
[2] -f is an option which may be passed to oplshut.
It causes oplshut to forcibly terminate the OpenLink Broker process.
Once employed, the Broker cannot wait for clients to terminate.