Portupgrade

From the FreeBSD 5.4-REL portupgrade manual:

NAME
     portupgrade, portinstall -- tools to upgrade installed packages or
     install new ones via ports or packages

SYNOPSIS
     portupgrade [-habcCDDfFiknNOpPPqrRsuvwWy] [-A command] [-B command]
                 [-l file] [-L format] [-S command] [-x pkgname_glob]
                 [[-o origin] [-m make_args] [-M make_env] pkgname_glob ...]

DESCRIPTION
     The portupgrade command is used to upgrade installed packages via ports
     or packages.  The portinstall command is equivalent to portupgrade -N.

     Before reading these instructions, you must understand that a port/pack-
     age can have the following two types of related ports/packages:
     required   Ports/packages that a port/package needs for it to be built
                and/or run.  Port Makefiles refer to this type of ports/pack-
                ages using the BUILD_DEPENDS and RUN_DEPENDS macros, respec-
                tively.
     dependent  Ports/packages that need this port/package.

WARNING
     o   Please read this manual page carefully and understand what you are
         doing with portupgrade.

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