Чистка установленых портов:

Рассмотрим порт ports-mgmt/pkg_cutleaves:
sh# cd /usr/ports/ports-mgmt/pkg_cutleaves
sh# make && install && clean
sh# rehash

sh# pkg_cutleaves
===================================================================================
Package 1 of 115:
autoconf-2.61_2 - Automatically configure source code on many Un*x platforms (2.61)
autoconf-2.61_2 - [keep]/(d)elete/(f)lush marked pkgs/(a)bort?
** Keeping autoconf-2.61_2.

Package 2 of 115:
automake-1.9.6 - GNU Standards-compliant Makefile generator (1.9)
automake-1.9.6 - [keep]/(d)elete/(f)lush marked pkgs/(a)bort?
** Keeping automake-1.9.6.

Package 3 of 115:
bind9-base-9.3.4.1 - Completely new version of the BIND DNS suite with updated DNSSEC
bind9-base-9.3.4.1 - [keep]/(d)elete/(f)lush marked pkgs/(a)bort?
** Keeping bind9-base-9.3.4.1.

Package 4 of 115:
bison-1.75_2,1 - A parser generator from FSF, (mostly) compatible with Yacc
bison-1.75_2,1 - [keep]/(d)elete/(f)lush marked pkgs/(a)bort?
** Keeping bison-1.75_2,1.

Package 5 of 115:
bluefish-1.0.5_1 - HTML editor designed for the experienced web designer
bluefish-1.0.5_1 - [keep]/(d)elete/(f)lush marked pkgs/(a)bort?
** Keeping bluefish-1.0.5_1.
=====================================================================================

Тупо отмечаем что оставить а что снести... )))