> doesn't that indicate that he already knows perl?

No, it does not. The script is simple and straightforward enough that it should be completely obvious that this is where to look. Anybody who actually knew enough of the language would figure this out on their own in a matter of minutes. The fact that he is asking (and not just asking which function, but which file) is a clear indicator that he doesn't yet know enough of the language to be able to accomplish the task.