mirror of
https://github.com/systemd/systemd.git
synced 2024-11-05 06:52:22 +03:00
f0b647223d
BUILD_ID is a fairly generic field used to identify the system image that was used to install the distribution.
373 lines
19 KiB
XML
373 lines
19 KiB
XML
<?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 Lesser General Public License as published by
|
|
the Free Software Foundation; either version 2.1 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser 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
|
|
(this means variable expansion is explicitly not
|
|
supported), allowing applications to read the file
|
|
without implementing a shell compatible execution
|
|
engine. Variable assignment values should be enclosed
|
|
in double or single quotes if they include spaces,
|
|
semicolons or other special characters outside of A-Z,
|
|
a-z, 0-9. All strings should be in UTF-8 format, and
|
|
non-printable characters should not be used. If double
|
|
or single quotes or backslashes are to be used within
|
|
variable assignments they should be escaped with
|
|
backslashes, following shell style. It is not
|
|
supported to concatenate multiple individually quoted
|
|
strings. Lines beginning with "#" shall be ignored as
|
|
comments.</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>As this file only encodes names and identifiers
|
|
it should not be localized.</para>
|
|
|
|
<para>The file <filename>/etc/os-release</filename> might
|
|
be a symlink to another file, but it is important that
|
|
the file is available from earliest boot on, and hence
|
|
must be located on the root file system.</para>
|
|
|
|
<para>For a longer rationale for
|
|
<filename>/etc/os-release</filename> please refer to
|
|
the <ulink
|
|
url="http://0pointer.de/blog/projects/os-release">Announcement of <filename>/etc/os-release</filename></ulink>.</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 component, and suitable for
|
|
presentation to the user. If not set
|
|
defaults to
|
|
<literal>NAME=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 OS name information,
|
|
possibly including a release code
|
|
name, and suitable for presentation to
|
|
the user. This field is
|
|
optional. Example:
|
|
<literal>VERSION=17</literal> or
|
|
<literal>VERSION="17 (Beefy
|
|
Miracle)"</literal>.</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>ID=</varname></term>
|
|
|
|
<listitem><para>A lower-case string
|
|
(no spaces or other characters outside
|
|
of 0-9, a-z, ".", "_" and "-")
|
|
identifying the operating system,
|
|
excluding any version information and
|
|
suitable for processing by scripts or
|
|
usage in generated file names. If not
|
|
set defaults to
|
|
<literal>ID=linux</literal>. Example:
|
|
<literal>ID=fedora</literal> or
|
|
<literal>ID=debian</literal>.</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>ID_LIKE=</varname></term>
|
|
|
|
<listitem><para>A space-separated list
|
|
of operating system identifiers in the
|
|
same syntax as the
|
|
<varname>ID=</varname> setting. Should
|
|
list identifiers of operating systems
|
|
that are closely related to the local
|
|
operating system in regards to
|
|
packaging and programming interfaces,
|
|
for example listing one or more
|
|
OS identifiers the local
|
|
OS is a derivative from. An
|
|
OS should generally only list other OS
|
|
identifiers it itself is a derivative
|
|
from, and not any OSes that
|
|
are derived from it, but symmetric
|
|
relationships are possible. Build
|
|
scripts and similar should check this
|
|
variable if they need to identify the
|
|
local operating system and the value
|
|
of <varname>ID=</varname> is not
|
|
recognized. Operating systems should
|
|
be listed in order of how closely the
|
|
local operating system relates to the
|
|
listed ones, starting with the
|
|
closest. This field is
|
|
optional. Example: for an operating
|
|
system with
|
|
<literal>ID=centos</literal> an
|
|
assignment of <literal>ID_LIKE="rhel
|
|
fedora"</literal> would be
|
|
appropriate. For an operating system
|
|
with <literal>ID=ubuntu</literal> an
|
|
assignment of
|
|
<literal>ID_LIKE=debian</literal> is
|
|
appropriate.</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>VERSION_ID=</varname></term>
|
|
|
|
<listitem><para>A lower-case string
|
|
(mostly numeric, no spaces or other
|
|
characters outside of 0-9, a-z, ".",
|
|
"_" and "-") identifying the operating
|
|
system version, excluding any OS name
|
|
information or release code name, and
|
|
suitable for processing by scripts or
|
|
usage in generated file names. This
|
|
field is optional. Example:
|
|
<literal>VERSION_ID=17</literal> or
|
|
<literal>VERSION_ID=11.04</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 a release code name or OS
|
|
version of some kind, as suitable. If
|
|
not set defaults to
|
|
<literal>PRETTY_NAME="Linux"</literal>. Example:
|
|
<literal>PRETTY_NAME="Fedora 17 (Beefy
|
|
Miracle)"</literal>.</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>ANSI_COLOR=</varname></term>
|
|
|
|
<listitem><para>A suggested
|
|
presentation color when showing the
|
|
OS 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. This field is
|
|
optional. Example:
|
|
<literal>ANSI_COLOR="0;31"</literal>
|
|
for red, or
|
|
<literal>ANSI_COLOR="1;34"</literal>
|
|
for light blue.</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>CPE_NAME=</varname></term>
|
|
|
|
<listitem><para>A CPE name for the
|
|
operating system, following the <ulink
|
|
url="http://cpe.mitre.org/specification/">Common
|
|
Platform Enumeration
|
|
Specification</ulink> as proposed by
|
|
the MITRE Corporation. This field
|
|
is optional. Example:
|
|
<literal>CPE_NAME="cpe:/o:fedoraproject:fedora:17"</literal>
|
|
</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>HOME_URL=</varname></term>
|
|
<term><varname>SUPPORT_URL=</varname></term>
|
|
<term><varname>BUG_REPORT_URL=</varname></term>
|
|
|
|
<listitem><para>Links to resources on
|
|
the Internet related the operating
|
|
system. <varname>HOME_URL=</varname>
|
|
should refer to the homepage of the
|
|
operating system, or alternatively
|
|
some homepage of the specific version
|
|
of the operating
|
|
system. <varname>SUPPORT_URL=</varname>
|
|
should refer to the main support page
|
|
for the operating system, if there is
|
|
any. This is primarily intended for
|
|
operating systems which vendors
|
|
provide support
|
|
for. <varname>BUG_REPORT_URL=</varname>
|
|
should refer to the main bug reporting
|
|
page for the operating system, if
|
|
there is any. This is primarily
|
|
intended for operating systems that
|
|
rely on community QA. These settings
|
|
are optional, and providing only some
|
|
of these settings is common. These
|
|
URLs are intended to be exposed in
|
|
"About this system" UIs behind links
|
|
with captions such as "About this
|
|
Operating System", "Obtain Support",
|
|
and "Report a Bug". The values should
|
|
be in <ulink
|
|
url="https://tools.ietf.org/html/rfc3986">RFC3986
|
|
format</ulink>, and should be
|
|
<literal>http:</literal> or
|
|
<literal>https:</literal> URLs, and
|
|
possibly <literal>mailto:</literal> or
|
|
<literal>tel:</literal>. Only one URL
|
|
shall be listed in each setting. If
|
|
multiple resources need to be
|
|
referenced it is recommended to
|
|
provide an online landing page linking
|
|
all available resources. Examples:
|
|
<literal>HOME_URL="https://fedoraproject.org/"</literal>
|
|
and
|
|
<literal>BUG_REPORT_URL="https://bugzilla.redhat.com/"</literal></para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>BUILD_ID=</varname></term>
|
|
|
|
<listitem><para>A string uniquely
|
|
identifying the system image used as
|
|
the origin for a distribution (it is
|
|
not updated with system updates). The
|
|
field can be identical between
|
|
different VERSION_IDs as BUILD_ID is
|
|
an only a unique identifier to a
|
|
specific version. Distributions that
|
|
release each update as a new version
|
|
would only need to use VERSION_ID as
|
|
each build is already distinct based
|
|
on the VERSION_ID. This field is
|
|
optional. Example:
|
|
<literal>BUILD_ID="2013-03-20.3"</literal>
|
|
or
|
|
<literal>BUILD_ID=201303203</literal>.
|
|
|
|
</para></listitem>
|
|
</varlistentry>
|
|
|
|
</variablelist>
|
|
|
|
<para>If you are reading this file from C code or a
|
|
shell script to determine the OS or a specific version
|
|
of it, use the ID and VERSION_ID fields, possibly with
|
|
ID_LIKE as fallback for ID. When looking for an OS
|
|
identification string for presentation to the user use
|
|
the PRETTY_NAME field.</para>
|
|
|
|
<para>Note that operating system vendors may choose
|
|
not to provide version information, for example to
|
|
accommodate for rolling releases. In this case VERSION
|
|
and VERSION_ID may be unset. Applications should not
|
|
rely on these fields to be set.</para>
|
|
|
|
<para>Operating system vendors may extend the file
|
|
format and introduce new fields. It is highly
|
|
recommended to prefix new fields with an OS specific
|
|
name in order to avoid name clashes. Applications
|
|
reading this file must ignore unknown fields. Example:
|
|
<literal>DEBIAN_BTS="debbugs://bugs.debian.org/"</literal></para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Example</title>
|
|
|
|
<programlisting>NAME=Fedora
|
|
VERSION="17 (Beefy Miracle)"
|
|
ID=fedora
|
|
VERSION_ID=17
|
|
PRETTY_NAME="Fedora 17 (Beefy Miracle)"
|
|
ANSI_COLOR="0;34"
|
|
CPE_NAME="cpe:/o:fedoraproject:fedora:17"
|
|
HOME_URL="https://fedoraproject.org/"
|
|
BUG_REPORT_URL="https://bugzilla.redhat.com/"</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>,
|
|
<citerefentry><refentrytitle>hostname</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>machine-info</refentrytitle><manvolnum>5</manvolnum></citerefentry>
|
|
</para>
|
|
</refsect1>
|
|
|
|
</refentry>
|