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5 <refentry id='dbusmonitor1'>
7 <!-- dbus\-monitor manual page.
8 Copyright (C) 2003 Red Hat, Inc. -->
11 <refentrytitle>dbus-monitor</refentrytitle>
12 <manvolnum>1</manvolnum>
13 <refmiscinfo class="manual">User Commands</refmiscinfo>
14 <refmiscinfo class="source">D-Bus</refmiscinfo>
15 <refmiscinfo class="version">@DBUS_VERSION@</refmiscinfo>
18 <refname>dbus-monitor</refname>
19 <refpurpose>debug probe to print message bus messages</refpurpose>
21 <!-- body begins here -->
22 <refsynopsisdiv id='synopsis'>
24 <command>dbus-monitor</command>
25 <group choice='opt'><arg choice='plain'>--system </arg><arg choice='plain'>--session </arg><arg choice='plain'>--address <replaceable>ADDRESS</replaceable></arg></group>
26 <group choice='opt'><arg choice='plain'>--profile </arg><arg choice='plain'>--monitor </arg></group>
27 <arg choice='opt'><arg choice='plain'><replaceable>watch</replaceable></arg><arg choice='plain'><replaceable>expressions</replaceable></arg></arg>
33 <refsect1 id='description'><title>DESCRIPTION</title>
34 <para>The <command>dbus-monitor</command> command is used to monitor messages going
35 through a D-Bus message bus. See
36 <ulink url='http://www.freedesktop.org/software/dbus/'>http://www.freedesktop.org/software/dbus/</ulink> for more information about
37 the big picture.</para>
40 <para>There are two well-known message buses: the systemwide message bus
41 (installed on many systems as the "messagebus" service) and the
42 per-user-login-session message bus (started each time a user logs in).
43 The --system and --session options direct <command>dbus-monitor</command> to
44 monitor the system or session buses respectively. If neither is
45 specified, <command>dbus-monitor</command> monitors the session bus.</para>
48 <para><command>dbus-monitor</command> has two different output modes, the 'classic'-style
49 monitoring mode and profiling mode. The profiling format is a compact
50 format with a single line per message and microsecond-resolution timing
51 information. The --profile and --monitor options select the profiling
52 and monitoring output format respectively. If neither is specified,
53 <command>dbus-monitor</command> uses the monitoring output format.</para>
56 <para>In order to get <command>dbus-monitor</command> to see the messages you are interested
57 in, you should specify a set of watch expressions as you would expect to
58 be passed to the <emphasis remap='I'>dbus_bus_add_match</emphasis> function.</para>
61 <para>The message bus configuration may keep <command>dbus-monitor</command> from seeing
62 all messages, especially if you run the monitor as a non-root user.</para>
66 <refsect1 id='options'><title>OPTIONS</title>
67 <variablelist remap='TP'>
69 <term><option>--system</option></term>
71 <para>Monitor the system message bus.</para>
75 <term><option>--session</option></term>
77 <para>Monitor the session message bus. (This is the default.)</para>
81 <term><option>--address ADDRESS</option></term>
83 <para>Monitor an arbitrary message bus given at ADDRESS.</para>
87 <term><option>--profile</option></term>
89 <para>Use the profiling output format.</para>
93 <term><option>--monitor</option></term>
95 <para>Use the monitoring output format. (This is the default.)</para>
102 <refsect1 id='example'><title>EXAMPLE</title>
103 <para>Here is an example of using dbus-monitor to watch for the gnome typing
104 monitor to say things</para>
105 <literallayout remap='.nf'>
107 dbus-monitor "type='signal',sender='org.gnome.TypingMonitor',interface='org.gnome.TypingMonitor'"
109 </literallayout> <!-- .fi -->
113 <refsect1 id='author'><title>AUTHOR</title>
114 <para>dbus-monitor was written by Philip Blundell.
115 The profiling output mode was added by Olli Salli.</para>
119 <refsect1 id='bugs'><title>BUGS</title>
120 <para>Please send bug reports to the D-Bus mailing list or bug tracker,
121 see <ulink url='http://www.freedesktop.org/software/dbus/'>http://www.freedesktop.org/software/dbus/</ulink></para>