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Date: Thu, 10 Oct 2013 14:54:39 +0100 (BST)
From: Anton Shterenlikht <mexas@bris.ac.uk>
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To: freebsd-ports@freebsd.org, m.seaman@infracaninophile.co.uk
Subject: Re: poudriere pkgclean: list of ports to delete or keep?
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>Date: Thu, 10 Oct 2013 14:39:34 +0100
>From: Matthew Seaman <m.seaman@infracaninophile.co.uk>
>To: freebsd-ports@freebsd.org
>Subject: Re: poudriere pkgclean: list of ports to delete or keep?
>
>When specifying a set of ports to work on with poudriere you have
>essentially three ways to do it from the command line:
>
>Either:
>
>     -a   All the ports in the tree
>
>Or:
>
>     -f filename
>
>     Read from a file containing a list of port origins, one per line
>
>Or:
>
>     category/portname1 category/portname2 ...
>
>     A list of the ports to work on given explicitly on the command line.=
>
>
>You can choose one or other of these methods for the bulk, options and
>pkgclean subcommands.
>

Thank you.
The phrasing in the man page
is not as clear as you put it.

Anton