how to show list of tags

I want to print a list of all cvs tags (one entry per line) in our repo 
from the command line using a single tag and then pass that to grep 
looking for a pattern.

I have googled and googled, read many documents and no where can I find 
a single command that will show me a list of cvs tags.

Ideally I would also like to simply show branch tags, but also need ALL 
tags.

If anyone can help, that would be great.  I do not have the time to 
write a perl script to do this.

Regards,

J.V.