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+<?xml version='1.0'?> <!--*-nxml-*-->
+<?xml-stylesheet type="text/xsl" href="http://docbook.sourceforge.net/release/xsl/current/xhtml/docbook.xsl"?>
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
+ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
+
+<!--
+ This file is part of systemd.
+
+ Copyright 2010 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+-->
+
+<refentry id="os-release">
+ <refentryinfo>
+ <title>os-release</title>
+ <productname>systemd</productname>
+
+ <authorgroup>
+ <author>
+ <contrib>Developer</contrib>
+ <firstname>Lennart</firstname>
+ <surname>Poettering</surname>
+ <email>lennart@poettering.net</email>
+ </author>
+ </authorgroup>
+ </refentryinfo>
+
+ <refmeta>
+ <refentrytitle>os-release</refentrytitle>
+ <manvolnum>5</manvolnum>
+ </refmeta>
+
+ <refnamediv>
+ <refname>os-release</refname>
+ <refpurpose>Operating system identification</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <para><filename>/etc/os-release</filename></para>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>The <filename>/etc/os-release</filename> file
+ contains operating system identification data.</para>
+
+ <para>The basic file format of
+ <filename>os-release</filename> is a
+ newline-separated list of environment-like
+ shell-compatible variable assignments. It is possible
+ to source the configuration from shell scripts,
+ however, beyond mere variable assignments no shell
+ features are supported, allowing applications to read
+ the file without implementing a shell compatible
+ execution engine.</para>
+
+ <para><filename>/etc/os-release</filename> contains
+ data that is defined by the operating system vendor
+ and should not be changed by the administrator.</para>
+
+ <para>Depending on the operating system other
+ configuration files might be checked for OS
+ identification as well, however only as
+ fallback.</para>
+ </refsect1>
+
+ <refsect1>
+ <title>Options</title>
+
+ <para>The following OS identifications parameters may be set using
+ <filename>/etc/os-release</filename>:</para>
+
+ <variablelist>
+
+ <varlistentry>
+ <term><varname>NAME=</varname></term>
+
+ <listitem><para>A string identifying
+ the operating system, without a
+ version string, and not necessarily
+ suitable for presentation to the
+ user. If not set defaults to
+ <literal>Linux</literal>. Example:
+ <literal>NAME=Fedora</literal> or
+ <literal>NAME="Debian
+ GNU/Linux"</literal>.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><varname>VERSION=</varname></term>
+
+ <listitem><para>A string identifying
+ the operating system version,
+ excluding any name information and
+ suitable for presentation to the
+ user. Example:
+ <literal>VERSION=15</literal> or
+ <literal>VERSION="15
+ (Rawhide)"</literal>.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><varname>ID=</varname></term>
+
+ <listitem><para>A lower-case string
+ identifying the operating system,
+ excluding any version information and
+ suitable for processing by scripts. If
+ not set defaults to
+ <literal>linux</literal>. Example:
+ <literal>ID=fedora</literal>.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><varname>VERSION_ID=</varname></term>
+
+ <listitem><para>A lower-case string
+ (mostly numeric) identifying the
+ operating system version, excluding
+ any name information and suitable for
+ processing by scripts. Example:
+ <literal>VERSION_ID=15</literal>.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><varname>PRETTY_NAME=</varname></term>
+
+ <listitem><para>A pretty operating
+ system name in a format suitable for
+ presentation to the user. May or may
+ not contain an OS version of some
+ kind, as suitable. If not set defaults
+ to <literal>Linux</literal>. Example:
+ <literal>PRETTY_NAME=Fedora 15
+ (Rawhide)</literal>.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><varname>ANSI_COLOR=</varname></term>
+
+ <listitem><para>A suggested
+ presentation color when showing the
+ distribution name on the console. This
+ should be specified as string suitable
+ for inclusion in the ESC [ m
+ ANSI/ECMA-48 escape code for setting
+ graphical rendition. Example:
+ <literal>ANSI_COLOR=0;31</literal> for
+ red, or
+ <literal>ANSI_COLOR=1;34</literal> for
+ light blue.</para></listitem>
+ </varlistentry>
+ </variablelist>
+
+ <para>If you interpreting this file from code or a
+ shell script, use the ID and VERSION_ID fields. When
+ looking for an OS indetification string for
+ presentation to the user use the PRETTY_STRING
+ field.</para>
+ </refsect1>
+
+ <refsect1>
+ <title>Example</title>
+
+ <programlisting>NAME=Fedora
+VERSION=15 (Rawhide)
+ID=fedora
+VERSION_ID=15
+PRETTY_NAME=Fedora 15 (Rawhide)
+ANSI_COLOR=0;34</programlisting>
+ </refsect1>
+
+ <refsect1>
+ <title>See Also</title>
+ <para>
+ <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>lsb_release</refentrytitle><manvolnum>1</manvolnum></citerefentry>
+ </para>
+ </refsect1>
+
+</refentry>