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[thirdparty/systemd.git] / man / busctl.xml

<?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">

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<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>