man/busctl.xml

   1 <?xml version='1.0'?> <!--*-nxml-*-->
   2 <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
   3 "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
   4
   5 <!--
   6 This file is part of systemd.
   7
   8 Copyright 2014 Zbigniew Jędrzejewski-Szmek
   9
  10 systemd is free software; you can redistribute it and/or modify it
  11 under the terms of the GNU Lesser General Public License as published by
  12 the Free Software Foundation; either version 2.1 of the License, or
  13 (at your option) any later version.
  14
  15 systemd is distributed in the hope that it will be useful, but
  16 WITHOUT ANY WARRANTY; without even the implied warranty of
  17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  18 Lesser General Public License for more details.
  19
  20 You should have received a copy of the GNU Lesser General Public License
  21 along with systemd; If not, see <http://www.gnu.org/licenses/>.
  22 -->
  23
  24 <refentry id="busctl"
  25           xmlns:xi="http://www.w3.org/2001/XInclude">
  26
  27   <refentryinfo>
  28     <title>busctl</title>
  29     <productname>systemd</productname>
  30
  31     <authorgroup>
  32       <author>
  33         <contrib>A monkey with a typewriter</contrib>
  34         <firstname>Zbigniew</firstname>
  35         <surname>Jędrzejewski-Szmek</surname>
  36         <email>zbyszek@in.waw.pl</email>
  37       </author>
  38     </authorgroup>
  39   </refentryinfo>
  40
  41   <refmeta>
  42     <refentrytitle>busctl</refentrytitle>
  43     <manvolnum>1</manvolnum>
  44   </refmeta>
  45
  46   <refnamediv>
  47     <refname>busctl</refname>
  48     <refpurpose>Introspect the bus</refpurpose>
  49   </refnamediv>
  50
  51   <refsynopsisdiv>
  52     <cmdsynopsis>
  53       <command>busctl</command>
  54       <arg choice="opt" rep="repeat">OPTIONS</arg>
  55       <arg choice="opt">COMMAND</arg>
  56       <arg choice="opt" rep="repeat"><replaceable>NAME</replaceable></arg>
  57     </cmdsynopsis>
  58   </refsynopsisdiv>
  59
  60   <refsect1>
  61     <title>Description</title>
  62
  63     <para><command>busctl</command> may be used to
  64     introspect and monitor the D-Bus bus.</para>
  65   </refsect1>
  66
  67   <refsect1>
  68     <title>Options</title>
  69
  70     <para>The following options are understood:</para>
  71
  72     <variablelist>
  73       <varlistentry>
  74           <term><option>--address=<replaceable>ADDRESS</replaceable></option></term>
  75
  76           <listitem><para>Connect to the bus specified by
  77           <replaceable>ADDRESS</replaceable> instead of using suitable
  78           defaults for either the system or user bus (see
  79           <option>--system</option> and <option>--user</option>
  80           options).</para></listitem>
  81       </varlistentry>
  82
  83       <varlistentry>
  84           <term><option>--show-machine</option></term>
  85
  86           <listitem><para>When showing the list of endpoints, show a
  87           column containing the names of containers they belong to.
  88           See
  89           <citerefentry><refentrytitle>systemd-machined.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
  90           </para></listitem>
  91       </varlistentry>
  92
  93       <varlistentry>
  94           <term><option>--unique</option></term>
  95
  96           <listitem><para>When showing the list of endpoints, show
  97           only "unique" names (of the form
  98           <literal>:<replaceable>number</replaceable>.<replaceable>number</replaceable></literal>).
  99           </para></listitem>
 100       </varlistentry>
 101
 102       <varlistentry>
 103           <term><option>--acquired</option></term>
 104
 105           <listitem><para>The opposite of <option>--unique</option> —
 106           only "well-known" names will be shown.</para></listitem>
 107       </varlistentry>
 108
 109       <varlistentry>
 110           <term><option>--activatable</option></term>
 111
 112           <listitem><para>When showing the list of endpoints, show
 113           only endpoints which have actually not been activated yet,
 114           but may be started automatically if accessed.</para>
 115           </listitem>
 116       </varlistentry>
 117
 118       <varlistentry>
 119           <term><option>--match=<replaceable>MATCH</replaceable></option></term>
 120
 121           <listitem><para>When showing messages being exchanged, show only the
 122           subset matching <replaceable>MATCH</replaceable>.</para></listitem>
 123           <!-- TODO: link to sd_bus_add_match when it is written? -->
 124       </varlistentry>
 125
 126       <varlistentry>
 127         <term><option>--no-legend</option></term>
 128
 129         <listitem>
 130           <para>Do not print the legend,
 131           i.e. the column headers and the
 132           footer.</para>
 133         </listitem>
 134       </varlistentry>
 135
 136       <varlistentry>
 137         <term><option>--size=</option></term>
 138
 139         <listitem>
 140           <para>When used with the <command>capture</command> command
 141           specifies the maximum bus message size to capture
 142           ("snaplen"). Defaults to 4096 bytes.</para>
 143         </listitem>
 144       </varlistentry>
 145
 146       <varlistentry>
 147         <term><option>--list</option></term>
 148
 149         <listitem>
 150           <para>When used with the <command>tree</command> shows a
 151           flat list of object paths instead of a tree.</para>
 152         </listitem>
 153       </varlistentry>
 154
 155       <varlistentry>
 156         <term><option>--quiet</option></term>
 157
 158         <listitem>
 159           <para>When used with the <command>call</command> command suppresses
 160           display of the response message.</para>
 161         </listitem>
 162       </varlistentry>
 163
 164       <xi:include href="user-system-options.xml" xpointer="user" />
 165       <xi:include href="user-system-options.xml" xpointer="system" />
 166       <xi:include href="user-system-options.xml" xpointer="host" />
 167       <xi:include href="user-system-options.xml" xpointer="machine" />
 168
 169       <xi:include href="standard-options.xml" xpointer="help" />
 170       <xi:include href="standard-options.xml" xpointer="version" />
 171       <xi:include href="standard-options.xml" xpointer="no-pager" />
 172     </variablelist>
 173   </refsect1>
 174
 175   <refsect1>
 176     <title>Commands</title>
 177
 178     <para>The following commands are understood:</para>
 179
 180     <variablelist>
 181       <varlistentry>
 182         <term><command>list</command></term>
 183
 184         <listitem><para>Show service names on the bus. This is the
 185         default if no command is specified.</para></listitem>
 186       </varlistentry>
 187
 188       <varlistentry>
 189         <term><command>tree</command>  <arg choice="opt" rep="repeat"><replaceable>NAME</replaceable></arg></term>
 190
 191         <listitem><para>Shows an object tree of one or more
 192         services. If <replaceable>NAME</replaceable> is specified,
 193         show object tree of the specified services only. Otherwise,
 194         show all object trees of all services on the bus that acquired
 195         at least one well-known name.</para></listitem>
 196       </varlistentry>
 197
 198       <varlistentry>
 199         <term><command>monitor</command>  <arg choice="opt" rep="repeat"><replaceable>NAME</replaceable></arg></term>
 200
 201         <listitem><para>Dump messages being exchanged. If
 202         <replaceable>NAME</replaceable> is specified, show messages
 203         to or from this endpoint. Otherwise, show all messages on the
 204         bus.</para></listitem>
 205       </varlistentry>
 206
 207       <varlistentry>
 208         <term><command>capture</command>  <arg choice="opt" rep="repeat"><replaceable>NAME</replaceable></arg></term>
 209
 210         <listitem><para>Similar to <command>monitor</command> but
 211         writes the output in pcap format (for details see the <ulink
 212         url="http://wiki.wireshark.org/Development/LibpcapFileFormat">Libpcap
 213         File Format</ulink> description. Make sure to redirect the
 214         output to STDOUT to a file. Tools like
 215         <citerefentry><refentrytitle>wireshark</refentrytitle><manvolnum>1</manvolnum></citerefentry>
 216         may be used to dissect and view the generated
 217         files.</para></listitem>
 218       </varlistentry>
 219
 220       <varlistentry>
 221         <term><command>status</command>  <arg choice="plain"><replaceable>NAME</replaceable></arg></term>
 222
 223         <listitem><para>Show process information and credentials of a
 224         bus service.</para></listitem>
 225       </varlistentry>
 226
 227       <varlistentry>
 228         <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>PARAMETERS</replaceable></arg></arg></term>
 229
 230         <listitem><para>Invoke a method and show the response.</para></listitem>
 231       </varlistentry>
 232
 233       <varlistentry>
 234         <term><command>help</command></term>
 235
 236         <listitem><para>Show command syntax help.</para></listitem>
 237       </varlistentry>
 238     </variablelist>
 239   </refsect1>
 240
 241   <refsect1>
 242     <title>See Also</title>
 243
 244     <para>
 245       <citerefentry><refentrytitle>dbus-daemon</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
 246       <ulink url="http://freedesktop.org/wiki/Software/dbus">D-Bus</ulink>,
 247       <ulink url="https://code.google.com/p/d-bus/">kdbus</ulink>,
 248       <citerefentry><refentrytitle>sd-bus</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
 249       <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
 250       <citerefentry><refentrytitle>systemd-bus-proxyd</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
 251       <citerefentry><refentrytitle>machinectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
 252       <citerefentry><refentrytitle>wireshark</refentrytitle><manvolnum>1</manvolnum></citerefentry>
 253     </para>
 254   </refsect1>
 255 </refentry>