1<?xml version="1.0"?> 2<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" 3 "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd"> 4<!-- SPDX-License-Identifier: LGPL-2.1-or-later --> 5 6<tbody> 7 <!-- note: units also use the following deprecated specifiers that are not documented: 8 %c, %r, %R. Do not reuse. --> 9 10 <row id='a'> 11 <entry><literal>%a</literal></entry> 12 <entry>Architecture</entry> 13 <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> 14 </row> 15 <row id='A'> 16 <entry><literal>%A</literal></entry> 17 <entry>Operating system image version</entry> 18 <entry>The operating system image version identifier of the running system, as read from the <varname>IMAGE_VERSION=</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> 19 </row> 20 <row id='b'> 21 <entry><literal>%b</literal></entry> 22 <entry>Boot ID</entry> 23 <entry>The boot ID of the running system, formatted as string. See <citerefentry><refentrytitle>random</refentrytitle><manvolnum>4</manvolnum></citerefentry> for more information.</entry> 24 </row> 25 <row id='B'> 26 <entry><literal>%B</literal></entry> 27 <entry>Operating system build ID</entry> 28 <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> 29 </row> 30 <row id='H'> 31 <entry><literal>%H</literal></entry> 32 <entry>Host name</entry> 33 <entry>The hostname of the running system.</entry> 34 </row> 35 <row id='l'> 36 <entry><literal>%l</literal></entry> 37 <entry>Short host name</entry> 38 <entry>The hostname of the running system, truncated at the first dot to remove any domain component.</entry> 39 </row> 40 <row id='m'> 41 <entry><literal>%m</literal></entry> 42 <entry>Machine ID</entry> 43 <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> 44 </row> 45 <row id='M'> 46 <entry><literal>%M</literal></entry> 47 <entry>Operating system image identifier</entry> 48 <entry>The operating system image identifier of the running system, as read from the <varname>IMAGE_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> 49 </row> 50 <row id='o'> 51 <entry><literal>%o</literal></entry> 52 <entry>Operating system ID</entry> 53 <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> 54 </row> 55 <row id='q'> 56 <entry><literal>%q</literal></entry> 57 <entry>Pretty host name</entry> 58 <entry>The pretty hostname of the running system, as read from the <varname>PRETTY_HOSTNAME=</varname> field of <filename>/etc/machine-info</filename>. If not set, resolves to the short hostname. See <citerefentry><refentrytitle>machine-info</refentrytitle><manvolnum>5</manvolnum></citerefentry> for more information.</entry> 59 </row> 60 <row id='T'> 61 <entry><literal>%T</literal></entry> 62 <entry>Directory for temporary files</entry> 63 <entry>This is either <filename>/tmp<!-- no / --></filename> or the path <literal>$TMPDIR</literal>, <literal>$TEMP</literal> or <literal>$TMP</literal> are set to. (Note that the directory may be specified without a trailing slash.)</entry> 64 </row> 65 <row id='v'> 66 <entry><literal>%v</literal></entry> 67 <entry>Kernel release</entry> 68 <entry>Identical to <command>uname -r</command> output.</entry> 69 </row> 70 <row id='V'> 71 <entry><literal>%V</literal></entry> 72 <entry>Directory for larger and persistent temporary files</entry> 73 <entry>This is either <filename>/var/tmp<!-- no / --></filename> or the path <literal>$TMPDIR</literal>, <literal>$TEMP</literal> or <literal>$TMP</literal> are set to. (Note that the directory may be specified without a trailing slash.)</entry> 74 </row> 75 <row id='w'> 76 <entry><literal>%w</literal></entry> 77 <entry>Operating system version ID</entry> 78 <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> 79 </row> 80 <row id='W'> 81 <entry><literal>%W</literal></entry> 82 <entry>Operating system variant ID</entry> 83 <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> 84 </row> 85 <row id='percent'> 86 <entry><literal>%%</literal></entry> 87 <entry>Single percent sign</entry> 88 <entry>Use <literal>%%</literal> in place of <literal>%</literal> to specify a single percent sign.</entry> 89 </row> 90</tbody> 91