It is possible to specify options and predefined properties from the command-line when running Robocode. The usage of these can be listed by writing this from a command prompt or shell:

robocode -help 

For example, it is possible to:

• disable the graphical user interface (GUI).
• disable security that is specific to Robocode (but does not override the security that comes with the JVM).
• enable/disable the debugging mode, useful when debugging robots.
• play a battle based on an existing Robocode .battle file.
• replay a recorded battle visually.
• save the results of battles in a comma-separated file.

You can read more details here: