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<?xml version='1.0'?> <!--*-nxml-*-->
<!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 2014 Zbigniew Jędrzejewski-Szmek
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="busctl"
xmlns:xi="http://www.w3.org/2001/XInclude">
<refentryinfo>
<title>busctl</title>
<productname>systemd</productname>
<authorgroup>
<author>
<contrib>A monkey with a typewriter</contrib>
<firstname>Zbigniew</firstname>
<surname>Jędrzejewski-Szmek</surname>
<email>zbyszek@in.waw.pl</email>
</author>
</authorgroup>
</refentryinfo>
<refmeta>
<refentrytitle>busctl</refentrytitle>
<manvolnum>1</manvolnum>
</refmeta>
<refnamediv>
<refname>busctl</refname>
<refpurpose>Introspect the bus</refpurpose>
</refnamediv>
<refsynopsisdiv>
<cmdsynopsis>
<command>busctl</command>
<arg choice="opt" rep="repeat">OPTIONS</arg>
<arg choice="opt">COMMAND</arg>
<arg choice="opt" rep="repeat"><replaceable>NAME</replaceable></arg>
</cmdsynopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para><command>busctl</command> may be used to
introspect and monitor the D-Bus bus.</para>
</refsect1>
<refsect1>
<title>Options</title>
<para>The following options are understood:</para>
<variablelist>
<varlistentry>
<term><option>--address=<replaceable>ADDRESS</replaceable></option></term>
<listitem><para>Connect to the bus specified by
<replaceable>ADDRESS</replaceable> instead of using suitable
defaults for either the system or user bus (see
<option>--system</option> and <option>--user</option>
options).</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--show-machine</option></term>
<listitem><para>When showing the list of endpoints, show a
column containing the names of containers they belong to.
See
<citerefentry><refentrytitle>systemd-machined.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--unique</option></term>
<listitem><para>When showing the list of endpoints, show
only "unique" names (of the form
<literal>:<replaceable>number</replaceable>.<replaceable>number</replaceable></literal>).
</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--acquired</option></term>
<listitem><para>The opposite of <option>--unique</option> —
only "well-known" names will be shown.</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--activatable</option></term>
<listitem><para>When showing the list of endpoints, show
only endpoints which have actually not been activated yet,
but may be started automatically if accessed.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>--match=<replaceable>MATCH</replaceable></option></term>
<listitem><para>When showing messages being exchanged, show only the
subset matching <replaceable>MATCH</replaceable>.</para></listitem>
<!-- TODO: link to sd_bus_add_match when it is written? -->
</varlistentry>
<varlistentry>
<term><option>--no-legend</option></term>
<listitem>
<para>Do not print the legend,
i.e. the column headers and the
footer.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>--size=</option></term>
<listitem>
<para>When used with the <command>capture</command> command
specifies the maximum bus message size to capture
("snaplen"). Defaults to 4096 bytes.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>--list</option></term>
<listitem>
<para>When used with the <command>tree</command> shows a
flat list of object paths instead of a tree.</para>
</listitem>
</varlistentry>
<xi:include href="user-system-options.xml" xpointer="user" />
<xi:include href="user-system-options.xml" xpointer="system" />
<xi:include href="user-system-options.xml" xpointer="host" />
<xi:include href="user-system-options.xml" xpointer="machine" />
<xi:include href="standard-options.xml" xpointer="help" />
<xi:include href="standard-options.xml" xpointer="version" />
<xi:include href="standard-options.xml" xpointer="no-pager" />
</variablelist>
</refsect1>
<refsect1>
<title>Commands</title>
<para>The following commands are understood:</para>
<variablelist>
<varlistentry>
<term><command>list</command></term>
<listitem><para>Show service names on the bus. This is the
default if no command is specified.</para></listitem>
</varlistentry>
<varlistentry>
<term><command>tree</command> <arg choice="opt" rep="repeat"><replaceable>NAME</replaceable></arg></term>
<listitem><para>Shows an object tree of one or more
services. If <replaceable>NAME</replaceable> is specified,
show object tree of the specified services only. Otherwise,
show all object trees of all services on the bus that acquired
at least one well-known name.</para></listitem>
</varlistentry>
<varlistentry>
<term><command>monitor</command> <arg choice="opt" rep="repeat"><replaceable>NAME</replaceable></arg></term>
<listitem><para>Dump messages being exchanged. If
<replaceable>NAME</replaceable> is specified, show messages
to or from this endpoint. Otherwise, show all messages on the
bus.</para></listitem>
</varlistentry>
<varlistentry>
<term><command>capture</command> <arg choice="opt" rep="repeat"><replaceable>NAME</replaceable></arg></term>
<listitem><para>Similar to <command>monitor</command> but
writes the output in pcap format (for details see the <ulink
url="http://wiki.wireshark.org/Development/LibpcapFileFormat">Libpcap
File Format</ulink> description. Make sure to redirect the
output to STDOUT to a file. Tools like
<citerefentry><refentrytitle>wireshark</refentrytitle><manvolnum>1</manvolnum></citerefentry>
may be used to dissect and view the generated
files.</para></listitem>
</varlistentry>
<varlistentry>
<term><command>status</command> <arg choice="plain"><replaceable>NAME</replaceable></arg></term>
<listitem><para>Show process information and credentials of a
bus service.</para></listitem>
</varlistentry>
<varlistentry>
<term><command>help</command></term>
<listitem><para>Show command syntax help.</para></listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>See Also</title>
<para>
<citerefentry><refentrytitle>dbus-daemon</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<ulink url="http://freedesktop.org/wiki/Software/dbus">D-Bus</ulink>,
<ulink url="https://code.google.com/p/d-bus/">kdbus</ulink>,
<citerefentry><refentrytitle>sd-bus</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd-bus-proxyd</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
<citerefentry><refentrytitle>machinectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>wireshark</refentrytitle><manvolnum>1</manvolnum></citerefentry>
</para>
</refsect1>
</refentry>
|
