CVS + SSH - restricting login access with authorized_keys file for ALL public keys

[Aienthiwan]

Hi there,

This issue has been thoroughly discussed elsewhere, on how to restrict
login access to a machine without hindering CVS over SSH. Well, I'm
trying to do jnust that using the following advice taken from
http://groups.google.com/groups?q=g:thl2062267988d&dq=&hl=en&lr=&ie=UTF-8&selm=mailman.795.1078070425.340.info-cvs%40gnu.org&rnum=33:

"Provide only stub home directories with a .ssh/authorized keys file
that gives them their public key and restrists the command they are
able to run to the pathname to the 'cvs' command only."

However, I would like to do this for ALL keys, not just one
specifically. I can't seem to get this to work. Is there a way of
being able to restrict to just command="/usr/bin/cvs" in one's
authorized_keys file for all keys?? Could anyone show an example on
how to do this? I can't seem to get this to work for the life of me.

Thanks in advance,
   Aienthiwan