how to use rar to split huge files?

From: les ander (
Date: 01/11/05

Date: 10 Jan 2005 15:29:41 -0800

Dear all,
i hope this is an appropriate newsgroup for this question (if not, please
tell me which one).

I have a large file: called
which is over 1 gig.
which I want to split into 10 M chunks so that i can email it to my self
(mail server does not allow anything larger than 10 megs to pass through)
I would be grateful if you can show me how.
I did rar -help but the output is unfriendly.
I figured out that I want something like

rar a -v10000k mybackup.iso
but this does not work.
many thanks