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+ ##
+ ## rc.pod -- OpenPKG Run-Command Facility (Manual Page)
+ ## Copyright (c) 2000-2002 Cable & Wireless Deutschland GmbH
+ ## Copyright (c) 2000-2002 The OpenPKG Project <http://www.openpkg.org/>
+ ## Copyright (c) 2000-2002 Ralf S. Engelschall <rse@engelschall.com>
+ ##
+ ## Permission to use, copy, modify, and distribute this software for
+ ## any purpose with or without fee is hereby granted, provided that
+ ## the above copyright notice and this permission notice appear in all
+ ## copies.
+ ##
+ ## THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
+ ## WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ ## MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ ## IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR
+ ## CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ ## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ ## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ ## USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ ## ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ ## OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ ## OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ ## SUCH DAMAGE.
+ ##
+
+ =pod
+
+ =head1 NAME
+
+ B<rc> - OpenPKG Run-Command Facility
+
+ =head1 SYNOPSIS
+
+ =over 4
+
+ =item B<General>
+
+ @l_prefix@/etc/rc
+ [B<-f>|B<--rcfile> I<file>]
+ [B<-d>|B<--rcdir> I<dir>[C<:>I<dir>[...]]
+ [B<-C>|B<--rcconf> I<file>[C<:>I<file>[...]]]
+ [B<-F>|B<--rcfunc> I<file>[C<:>I<file>[...]]]
+ [B<-t>|B<--tmpdir> I<dir>]
+ [B<-r>|B<--raw>]
+ [B<-v>|B<--verbose>]
+ [B<-D>|B<--debug>]
+ [I<command-options>]
+ [I<command-arguments>]
+
+ =item B<Run-Command Execution>
+
+ @l_prefix@/etc/rc
+ [I<parameter-options>]
+ [B<-x>|B<--exec>]
+ [B<-p>|B<--print>]
+ [B<-e>|B<--eval>]
+ I<package>
+ I<command>
+
+ =item B<Configuration Query>
+
+ @l_prefix@/etc/rc
+ [I<parameter-options>]
+ [B<-q>|B<--query>]
+ I<format>
+
+ @l_prefix@/etc/rc
+ [I<parameter-options>]
+ [B<-c>|B<--config>]
+ [I<package>]
+
+ =item B<Facility Query>
+
+ @l_prefix@/etc/rc
+ [I<parameter-options>]
+ [B<-i>|B<--info>]
+
+ @l_prefix@/etc/rc
+ [B<-h>|B<--help>]
+ [B<-V>|B<--version>]
+
+ =head1 PARAMETER OPTIONS
+
+ All these options have reasonable builtin defaults by can be used to
+ adjust one or more parameters of the B<rc> facility.
+
+ =over 4
+
+ =item B<-f>, B<--rcfile> I<file>
+
+ =item B<-d>, B<--rcdir> I<dir>[C<:>I<dir>[...]
+
+ =item B<-C>, B<--rcconf> I<file>[C<:>I<file>[...]]
+
+ =item B<-F>, B<--rcfunc> I<file>[C<:>I<file>[...]]
+
+ =item B<-t>, B<--tmpdir> I<dir>
+
+ Force the use of a particular temporary directory. By default B<rc>
+ tries to use (in this order) C<$TMPDIR>, C<$TEMPDIR>, C<~/tmp> and
+ C</tmp>.
+
+ =item B<-r>, B<--raw>
+
+ Control whether the output controlled by the options B<--config>,
+ B<--help>, B<--version> and B<--verbose> are raw text or annotated with
+ terminal control sequences for better readability. By default B<rc>
+ automatically determines whether F<stdout> is connected to a terminal or
+ not and uses terminal sequences in the output or respectively raw text
+ output only.
+
+ =item B<-v>, B<--verbose>
+
+ Enables verbose messages on F<stdout>.
+
+ =item B<-D>, B<--debug>
+
+ Enables debugging messages on F<stderr>.
+
+ =back4
+
+ =head1 COMMAND OPTIONS
+
+ These options are mutually exclusive, i.e., you can specify only a
+ single one to select the type of operation.
+
+ =over 4
+
+ =item B<-x>, B<--exec>
+
+ This is the default where all run-commands are executed in sub-shells.
+ It expects exactly two non-option command line arguments: a I<package>
+ name and a I<command> name.
+
+ =item B<-p>, B<--print>
+
+ Instead of (by default) executing the run-commands, print them to
+ F<stdout> only.
+
+ =item B<-e>, B<--eval>
+
+ Instead of (by default) executing the run-commands in a sub-shell,
+ return a command suitable for evaluation the run-commands in the
+ current shell. Do not intermix this with option B<--print>, because
+ B<--eval> prepares the run-commands in a temporary file and just
+ outputs the necessary run and cleanup commands on F<stdout>. This is
+ because most Bourne-Shell flavors dislike to C<eval> commands spanning
+ multiple lines. So, B<--print> is for human readability and batch
+ post-processing, while B<--eval> is for batch evaluation through the
+ Bourne-Shell C<eval> command.
+
+ This is usually used from within F<.profile> files to import the shell
+ environment of the packages of an B<OpenPKG> hierarchy:
+
+ $ eval `@l_prefix@/etc/rc --eval all env`
+
+ =item B<-q>, B<--query>
+
+ Query the current (still default or overridden) value of one or more
+ run-command configuration variables (see rc-file section C<%config>).
+ It expects exactly one non-option command line argument: a I<format>
+ string. This is an arbitrary text string which can contain one or more
+ B<OSSP var> variable specifications ("C<${>I<name>C<}>" in its simplest
+ form).
+
+ =item B<-c>, B<--config>
+
+ =item B<-i>, B<--info>
+
+ Prints a summary of the whole run-command environment of B<rc>
+ and exits immediately.
+
+ =item B<-h>, B<--help>
+
+ Prints the B<rc> usage information and exits immediately.
+
+ =item B<-V>, B<--version>
+
+ Prints the B<rc> version and copyright information and exits immediately.
+
+ =back
+
+ =cut
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