systemd/man/standard-specifiers.xml
Zbigniew Jędrzejewski-Szmek e97708fa3e Add %l as specifier for the hostname without any domain component
As described in #15603, it is a fairly common setup to use a fqdn as the
configured hostname. But it is often convenient to use just the actual
hostname, i.e. until the first dot. This adds support in tmpfiles, sysusers,
and unit files for %l which expands to that.

Fixes #15603.
2020-05-07 17:36:44 +02:00

62 lines
3.7 KiB
XML

<?xml version="1.0"?>
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd">
<!-- SPDX-License-Identifier: LGPL-2.1+ -->
<tbody>
<row id='b'>
<entry><literal>%b</literal></entry>
<entry>Boot ID</entry>
<entry>The boot ID of the running system, formatted as string. See <citerefentry><refentrytitle>random</refentrytitle><manvolnum>4</manvolnum></citerefentry> for more information.</entry>
</row>
<row id='a'>
<entry><literal>%a</literal></entry>
<entry>Architecture</entry>
<entry>A short string identifying the architecture of the local system. A string such as <constant>x86</constant>, <constant>x86-64</constant> or <constant>arm64</constant>. See the architectures defined for <varname>ConditionArchitecture=</varname> in <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry> for a full list.</entry>
</row>
<row id='B'>
<entry><literal>%B</literal></entry>
<entry>Operating system build ID</entry>
<entry>The operating system build identifier of the running system, as read from the <varname>BUILD_ID=</varname> field of <filename>/etc/os-release</filename>. If not set, resolves to an empty string. See <citerefentry><refentrytitle>os-release</refentrytitle><manvolnum>5</manvolnum></citerefentry> for more information.</entry>
</row>
<row id='H'>
<entry><literal>%H</literal></entry>
<entry>Host name</entry>
<entry>The hostname of the running system.</entry>
</row>
<row id='l'>
<entry><literal>%l</literal></entry>
<entry>Short host name</entry>
<entry>The hostname of the running system, truncated at the first dot to remove any domain component.</entry>
</row>
<row id='m'>
<entry><literal>%m</literal></entry>
<entry>Machine ID</entry>
<entry>The machine ID of the running system, formatted as string. See <citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry> for more information.</entry>
</row>
<row id='o'>
<entry><literal>%o</literal></entry>
<entry>Operating system ID</entry>
<entry>The operating system identifier of the running system, as read from the <varname>ID=</varname> field of <filename>/etc/os-release</filename>. See <citerefentry><refentrytitle>os-release</refentrytitle><manvolnum>5</manvolnum></citerefentry> for more information.</entry>
</row>
<row id='v'>
<entry><literal>%v</literal></entry>
<entry>Kernel release</entry>
<entry>Identical to <command>uname -r</command> output.</entry>
</row>
<row id='w'>
<entry><literal>%w</literal></entry>
<entry>Operating system version ID</entry>
<entry>The operating system version identifier of the running system, as read from the <varname>VERSION_ID=</varname> field of <filename>/etc/os-release</filename>. If not set, resolves to an empty string. See <citerefentry><refentrytitle>os-release</refentrytitle><manvolnum>5</manvolnum></citerefentry> for more information.</entry>
</row>
<row id='W'>
<entry><literal>%W</literal></entry>
<entry>Operating system variant ID</entry>
<entry>The operating system variant identifier of the running system, as read from the <varname>VARIANT_ID=</varname> field of <filename>/etc/os-release</filename>. If not set, resolves to an empty string. See <citerefentry><refentrytitle>os-release</refentrytitle><manvolnum>5</manvolnum></citerefentry> for more information.</entry>
</row>
<row id='percent'>
<entry><literal>%%</literal></entry>
<entry>Single percent sign</entry>
<entry>Use <literal>%%</literal> in place of <literal>%</literal> to specify a single percent sign.</entry>
</row>
</tbody>