-r
--recursive Act on all those packages depending on the given
packages as well.-R
--upward-recursive Act on all those packages required by the given
packages as well. (When specified with -F, fetch
recursively, including the brand new, uninstalled
ports that an upgraded port requires)
# portupgrade -rf icu-\*
http://www.sonorilo.net/2009/02/03/2616
# portupgrade -rf lang/perl5.8
