Deleting ports distfiles

[Warren Block]

On Mon, 17 Nov 2014, RW wrote:

> portupgrade's portsclean utility and distviper (from
> sysutils/bsdadminscripts) can do it more flexibly.
>
> portmaster removes any files not associated with currently installed
> packages, the other two do can do that, but also have the option to
> leave any files that are still up-to-date with respect to the ports
> tree.

Actually, portmaster can do that also:
portmaster -t -y --clean-distfiles