I think this is the 4th time I've submitted this. >From the DESCR:
The shunt utilites: shunt, exactly, and flyisofs, were originally written for burning multi-set CDROM backups using mkiosfs and cdrecord. The key utility -- shunt -- manages recursive access to piped I/O, so that programs may be restarted and continue to use an existing pipe The port maintainer uses shunt to pipe output from backups onto a series of DVDs. It is also used to create a single pipe as input to restore tasks, from multiple discs mounted sequentially. The maintainer has been using this set of utilities without trouble for more than a year with OpenBSD. "$ <utility> -h" provides minimal usage information. For detailed information, see http://www.serice.net/shunt/
shunt172.tgz
Description: application/tar-gz