mirror of
https://github.com/systemd/systemd.git
synced 2024-12-29 15:22:07 +03:00
139 lines
5.1 KiB
XML
139 lines
5.1 KiB
XML
<?xml version='1.0'?> <!--*-nxml-*-->
|
|
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
|
|
"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
|
|
<!-- SPDX-License-Identifier: LGPL-2.1-or-later -->
|
|
|
|
<refentry id="systemd-id128" xmlns:xi="http://www.w3.org/2001/XInclude">
|
|
|
|
<refentryinfo>
|
|
<title>systemd-id128</title>
|
|
<productname>systemd</productname>
|
|
</refentryinfo>
|
|
|
|
<refmeta>
|
|
<refentrytitle>systemd-id128</refentrytitle>
|
|
<manvolnum>1</manvolnum>
|
|
</refmeta>
|
|
|
|
<refnamediv>
|
|
<refname>systemd-id128</refname>
|
|
<refpurpose>Generate and print sd-128 identifiers</refpurpose>
|
|
</refnamediv>
|
|
|
|
<refsynopsisdiv>
|
|
<cmdsynopsis>
|
|
<command>systemd-id128</command>
|
|
<arg choice="opt" rep="repeat">OPTIONS</arg>
|
|
<arg choice="plain">new</arg>
|
|
</cmdsynopsis>
|
|
|
|
<cmdsynopsis>
|
|
<command>systemd-id128</command>
|
|
<arg choice="opt" rep="repeat">OPTIONS</arg>
|
|
<arg choice="plain">machine-id</arg>
|
|
</cmdsynopsis>
|
|
|
|
<cmdsynopsis>
|
|
<command>systemd-id128</command>
|
|
<arg choice="opt" rep="repeat">OPTIONS</arg>
|
|
<arg choice="plain">boot-id</arg>
|
|
</cmdsynopsis>
|
|
|
|
<cmdsynopsis>
|
|
<command>systemd-id128</command>
|
|
<arg choice="opt" rep="repeat">OPTIONS</arg>
|
|
<arg choice="plain">invocation-id</arg>
|
|
</cmdsynopsis>
|
|
</refsynopsisdiv>
|
|
|
|
<refsect1>
|
|
<title>Description</title>
|
|
|
|
<para><command>id128</command> may be used to conveniently print
|
|
<citerefentry><refentrytitle>sd-id128</refentrytitle><manvolnum>3</manvolnum></citerefentry>
|
|
UUIDs. What identifier is printed depends on the specific verb.</para>
|
|
|
|
<para>With <command>new</command>, a new random identifier will be generated.</para>
|
|
|
|
<para>With <command>machine-id</command>, the identifier of the current machine will be
|
|
printed. See
|
|
<citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
|
|
</para>
|
|
|
|
<para>With <command>boot-id</command>, the identifier of the current boot will be
|
|
printed.</para>
|
|
|
|
<para>Both <command>machine-id</command> and <command>boot-id</command> may be combined
|
|
with the <option>--app-specific=<replaceable>app-id</replaceable></option> switch to
|
|
generate application-specific IDs. See
|
|
<citerefentry><refentrytitle>sd_id128_get_machine</refentrytitle><manvolnum>3</manvolnum></citerefentry>
|
|
for the discussion when this is useful.</para>
|
|
|
|
<para>With <command>invocation-id</command>, the identifier of the current service invocation
|
|
will be printed. This is available in systemd services. See
|
|
<citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
|
|
</para>
|
|
|
|
<para>With <command>show</command>, well-known IDs are printed (for now, only GPT partition type UUIDs),
|
|
along with brief identifier strings. When no arguments are specified, all known IDs are shown. When
|
|
arguments are specified, they must be the identifiers or ID values of one or more known IDs, which are
|
|
then printed. Combine with <option>--uuid</option> to list the IDs in UUID style, i.e. the way GPT
|
|
partition type UUIDs are usually shown.</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Options</title>
|
|
|
|
<para>The following options are understood:</para>
|
|
|
|
<variablelist>
|
|
<varlistentry>
|
|
<term><option>-p</option></term>
|
|
<term><option>--pretty</option></term>
|
|
|
|
<listitem><para>Generate output as programming language snippets.</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><option>-a <replaceable>app-id</replaceable></option></term>
|
|
<term><option>--app-specific=<replaceable>app-id</replaceable></option></term>
|
|
|
|
<listitem><para>With this option, an identifier that is the result of hashing the
|
|
application identifier <replaceable>app-id</replaceable> and the machine identifier will be
|
|
printed. The <replaceable>app-id</replaceable> argument must be a valid sd-id128 string
|
|
identifying the application.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><option>-u</option></term>
|
|
<term><option>--uuid</option></term>
|
|
|
|
<listitem><para>Generate output as an UUID formatted in the "canonical representation", with five
|
|
groups of digits separated by hyphens. See the
|
|
<ulink url="https://en.wikipedia.org/wiki/Universally_unique_identifier#Format">wikipedia</ulink>
|
|
for more discussion.</para></listitem>
|
|
</varlistentry>
|
|
|
|
<xi:include href="standard-options.xml" xpointer="help" />
|
|
<xi:include href="standard-options.xml" xpointer="version" />
|
|
</variablelist>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Exit status</title>
|
|
|
|
<para>On success, 0 is returned, a non-zero failure code otherwise.</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>See Also</title>
|
|
<para>
|
|
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>sd-id128</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>sd_id128_get_machine</refentrytitle><manvolnum>3</manvolnum></citerefentry>
|
|
</para>
|
|
</refsect1>
|
|
|
|
</refentry>
|