Is there a site with DOS commands?

Just curious. I'd like to learn more of the DOS commands.

ALso someone mentioned to me about using the Dos command HOWDY!... Is that an actual command, and if so then what does it do?

Thanks.

Here is a page that has some DOS commands on it.
http://www.csulb.edu/~murdock/dosindex.html

http://www.computerhope.com/msdos.htm#02 :)

Thanks. That helps alot.

MS-DOS v6.22 Help: Command Reference