fdbbee37d5
Docbook styles required those to be present, even though the templates that we use did not show those names anywhere. But something changed semi-recently (I would suspect docbook templates, but there was only a minor version bump in recent years, and the changelog does not suggest anything related), and builds now work without those entries. Let's drop this dead weight. Tested with F26-F29, debian unstable. $ perl -i -0pe 's/\s*<authorgroup>.*<.authorgroup>//gms' man/*xml
99 lines
4.9 KiB
XML
99 lines
4.9 KiB
XML
<?xml version='1.0'?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" [
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<!ENTITY % entities SYSTEM "custom-entities.ent" >
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%entities;
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]>
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<!-- SPDX-License-Identifier: LGPL-2.1+ -->
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<refentry id="systemd.syntax">
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<refentryinfo>
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<title>systemd.syntax</title>
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<productname>systemd</productname>
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</refentryinfo>
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<refmeta>
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<refentrytitle>systemd.syntax</refentrytitle>
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<manvolnum>7</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>systemd.syntax</refname>
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<refpurpose>General syntax of systemd configuration files</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Introduction</title>
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<para>This page describes the basic principles of configuration files used by
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>
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and related programs for:
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<itemizedlist>
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<listitem><para>systemd unit files, see
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<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.socket</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.device</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.mount</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.automount</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.swap</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.target</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.path</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.timer</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.slice</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.scope</refentrytitle><manvolnum>5</manvolnum></citerefentry></para></listitem>
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<listitem><para>daemon config files, see
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<citerefentry><refentrytitle>systemd-system.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-user.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>logind.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>journald.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>journal-remote.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>journal-upload.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-sleep.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>timesyncd.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>
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</para></listitem>
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</itemizedlist>
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</para>
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<para>The syntax is inspired by
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<ulink url="http://standards.freedesktop.org/desktop-entry-spec/latest/">XDG Desktop Entry Specification</ulink>
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<filename>.desktop</filename> files, which are in turn inspired by Microsoft Windows
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<filename>.ini</filename> files.
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</para>
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<para>Each file is a plain text file divided into sections, with configuration entries in the
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style <replaceable>key</replaceable>=<replaceable>value</replaceable>.
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Empty lines and lines starting with <literal>#</literal> or <literal>;</literal> are
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ignored, which may be used for commenting.</para>
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<para>Lines ending in a backslash are concatenated with the following line while reading and the
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backslash is replaced by a space character. This may be used to wrap long lines. The limit on
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line length is very large (currently 1 MB), but it is recommended to avoid such long lines and
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use multiple directives, variable substitution, or other mechanism as appropriate for the given
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file type.</para>
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<example><programlisting>[Section A]
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KeyOne=value 1
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KeyTwo=value 2
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# a comment
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[Section B]
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Setting="something" "some thing" "…"
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KeyTwo=value 2 \
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value 2 continued
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</programlisting></example>
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<para>Various settings are allowed to be specified more than once, in which case the
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interpretation depends on the setting. Often, multiple settings form a list, and setting to an
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empty value "resets", which means that previous assignments are ignored. When this is allowed,
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it is mentioned in the description of the setting. Note that using multiple assignments to the
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same value makes the file incompatible with parsers for the XDG <filename>.desktop</filename>
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file format.</para>
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</refsect1>
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</refentry>
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