What do you think about this instead?
It uses the --delete option which is compatible with virt-builder.
It doesn't allow globs (whereas your version did). Not sure if you
intended to allow globs.
Rich.
--
Richard Jones, Virtualization Group, Red Hat
http://people.redhat.com/~rjones
virt-top is 'top' for virtual machines. Tiny program with many
powerful monitoring features, net stats, disk stats, logging, etc.
http://people.redhat.com/~rjones/virt-top