How can I duplicate a set of installed ports?

[John Mills]

Freebies -

I have an installation I'm comfortable with, between those ports I chose 
to install, those I chose _not_ to install, and those I went around and 
added individually. Now I want to install the same set in a number of 
other systems. I know I can get a list of installed options with 
'pkg_info', but I don't know how to make the best use of the list.

The machines have 3.5" diskettes, _just_sufficient_ hard drives, netowrk
interface cards, and no CD-ROMs. They hang on a LAN served with DHCP.

I would like to avoid doing manual selection each time, of course. I would
prefer to do independent passive-FTP installations from a FreeBSD.org
server for each target machine rather than a disk-slice copy because I
wouldn't have to remove the drives from the computers.

What are my options, and your recommendations?

TIA.
 
 - John Mills
   john.m.mills at alum.mit.edu