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https://github.com/systemd/systemd.git
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281 lines
11 KiB
XML
281 lines
11 KiB
XML
<?xml version='1.0'?> <!--*-nxml-*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!--
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This file is part of systemd.
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Copyright 2014 Zbigniew Jędrzejewski-Szmek
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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-->
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<refentry id="busctl"
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xmlns:xi="http://www.w3.org/2001/XInclude">
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<refentryinfo>
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<title>busctl</title>
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<productname>systemd</productname>
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<authorgroup>
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<author>
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<contrib>A monkey with a typewriter</contrib>
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<firstname>Zbigniew</firstname>
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<surname>Jędrzejewski-Szmek</surname>
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<email>zbyszek@in.waw.pl</email>
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</author>
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</authorgroup>
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</refentryinfo>
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<refmeta>
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<refentrytitle>busctl</refentrytitle>
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<manvolnum>1</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>busctl</refname>
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<refpurpose>Introspect the bus</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>busctl</command>
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<arg choice="opt" rep="repeat">OPTIONS</arg>
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<arg choice="opt">COMMAND</arg>
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<arg choice="opt" rep="repeat"><replaceable>NAME</replaceable></arg>
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</cmdsynopsis>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para><command>busctl</command> may be used to
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introspect and monitor the D-Bus bus.</para>
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</refsect1>
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<refsect1>
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<title>Options</title>
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<para>The following options are understood:</para>
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<variablelist>
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<varlistentry>
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<term><option>--address=<replaceable>ADDRESS</replaceable></option></term>
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<listitem><para>Connect to the bus specified by
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<replaceable>ADDRESS</replaceable> instead of using suitable
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defaults for either the system or user bus (see
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<option>--system</option> and <option>--user</option>
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options).</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--show-machine</option></term>
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<listitem><para>When showing the list of endpoints, show a
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column containing the names of containers they belong to.
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See
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<citerefentry><refentrytitle>systemd-machined.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--unique</option></term>
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<listitem><para>When showing the list of endpoints, show
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only "unique" names (of the form
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<literal>:<replaceable>number</replaceable>.<replaceable>number</replaceable></literal>).
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--acquired</option></term>
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<listitem><para>The opposite of <option>--unique</option> —
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only "well-known" names will be shown.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--activatable</option></term>
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<listitem><para>When showing the list of endpoints, show
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only endpoints which have actually not been activated yet,
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but may be started automatically if accessed.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--match=<replaceable>MATCH</replaceable></option></term>
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<listitem><para>When showing messages being exchanged, show only the
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subset matching <replaceable>MATCH</replaceable>.</para></listitem>
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<!-- TODO: link to sd_bus_add_match when it is written? -->
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</varlistentry>
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<varlistentry>
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<term><option>--no-legend</option></term>
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<listitem>
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<para>Do not print the legend,
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i.e. the column headers and the
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footer.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--size=</option></term>
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<listitem>
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<para>When used with the <command>capture</command> command
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specifies the maximum bus message size to capture
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("snaplen"). Defaults to 4096 bytes.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--list</option></term>
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<listitem>
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<para>When used with the <command>tree</command> command shows a
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flat list of object paths instead of a tree.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--quiet</option></term>
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<listitem>
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<para>When used with the <command>call</command> command suppresses
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display of the response message.</para>
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</listitem>
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</varlistentry>
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<xi:include href="user-system-options.xml" xpointer="user" />
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<xi:include href="user-system-options.xml" xpointer="system" />
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<xi:include href="user-system-options.xml" xpointer="host" />
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<xi:include href="user-system-options.xml" xpointer="machine" />
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<xi:include href="standard-options.xml" xpointer="help" />
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<xi:include href="standard-options.xml" xpointer="version" />
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<xi:include href="standard-options.xml" xpointer="no-pager" />
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</variablelist>
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</refsect1>
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<refsect1>
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<title>Commands</title>
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<para>The following commands are understood:</para>
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<variablelist>
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<varlistentry>
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<term><command>list</command></term>
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<listitem><para>Show service names on the bus. This is the
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default if no command is specified.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><command>status</command> <arg choice="plain"><replaceable>SERVICE</replaceable></arg></term>
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<listitem><para>Show process information and credentials of a
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bus service.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><command>monitor</command> <arg choice="opt" rep="repeat"><replaceable>SERVICE</replaceable></arg></term>
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<listitem><para>Dump messages being exchanged. If
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<replaceable>SERVICE</replaceable> is specified, show messages
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to or from this endpoint. Otherwise, show all messages on the
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bus. Use Ctrl-C to terminate dump.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><command>capture</command> <arg choice="opt" rep="repeat"><replaceable>SERVICE</replaceable></arg></term>
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<listitem><para>Similar to <command>monitor</command> but
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writes the output in pcap format (for details see the <ulink
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url="http://wiki.wireshark.org/Development/LibpcapFileFormat">Libpcap
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File Format</ulink> description. Make sure to redirect the
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output to STDOUT to a file. Tools like
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<citerefentry><refentrytitle>wireshark</refentrytitle><manvolnum>1</manvolnum></citerefentry>
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may be used to dissect and view the generated
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files.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><command>tree</command> <arg choice="opt" rep="repeat"><replaceable>SERVICE</replaceable></arg></term>
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<listitem><para>Shows an object tree of one or more
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services. If <replaceable>SERVICE</replaceable> is specified,
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show object tree of the specified services only. Otherwise,
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show all object trees of all services on the bus that acquired
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at least one well-known name.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><command>introspect</command> <arg choice="plain"><replaceable>SERVICE</replaceable></arg> <arg choice="plain"><replaceable>OBJECT</replaceable></arg></term>
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<listitem><para>Show interfaces, methods, properties and
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signals of the specified object (identified by its path) on
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the specified service.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><command>call</command> <arg choice="plain"><replaceable>SERVICE</replaceable></arg> <arg choice="plain"><replaceable>OBJECT</replaceable></arg> <arg choice="plain"><replaceable>INTERFACE</replaceable></arg> <arg choice="plain"><replaceable>METHOD</replaceable></arg> <arg choice="opt"><replaceable>SIGNATURE</replaceable> <arg choice="opt" rep="repeat"><replaceable>ARGUMENT</replaceable></arg></arg></term>
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<listitem><para>Invoke a method and show the response. Takes a
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service name, object path, interface name and method name. If
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parameters shall be passed to the method call a signature
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string is required, followed by the individual arguments,
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individually formatted as textual parameters.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><command>get-property</command> <arg choice="plain"><replaceable>SERVICE</replaceable></arg> <arg choice="plain"><replaceable>OBJECT</replaceable></arg> <arg choice="opt"><replaceable>INTERFACE</replaceable> <arg choice="opt" rep="repeat"><replaceable>PROPERTY</replaceable></arg></arg></term>
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<listitem><para>Retrieve the current value one or more object
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properties. Takes a service name and object path. Optionally
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takes an interface name and property name. If the property
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name is omited, shows all properties on the selected
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interface. If the interface is also omitted shows the
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properties of all interfaces. Multiple properties may be
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specified at once in which case their values will be shown one
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after the other.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><command>help</command></term>
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<listitem><para>Show command syntax help.</para></listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1>
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<title>See Also</title>
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<para>
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<citerefentry><refentrytitle>dbus-daemon</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<ulink url="http://freedesktop.org/wiki/Software/dbus">D-Bus</ulink>,
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<ulink url="https://code.google.com/p/d-bus/">kdbus</ulink>,
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<citerefentry><refentrytitle>sd-bus</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-bus-proxyd</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>machinectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>wireshark</refentrytitle><manvolnum>1</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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