Sure. I just couldn't think of a way to convince google to find the right answer. Anything like "on unix learn tool" or "unix learn command" wouldn't bring me it. What search did you use to find it on google?

I think the key would be knowing what flavor of Unix they were on. `bsd man learn` gets me to that page.

Not OP but I found this with "unix man learn" (without the quotes). It took a few tries though.