dbus-monitor(1)


NAME

   dbus-monitor - debug probe to print message bus messages

SYNOPSIS

   dbus-monitor [--system | --session | --address ADDRESS] [--profile |
                --monitor | --pcap | --binary] [watch expressions]

DESCRIPTION

   The dbus-monitor command is used to monitor messages going through a
   D-Bus message bus. See http://www.freedesktop.org/software/dbus/ for
   more information about the big picture.

   There are two well-known message buses: the systemwide message bus
   (installed on many systems as the "messagebus" service) and the
   per-user-login-session message bus (started each time a user logs in).
   The --system and --session options direct dbus-monitor to monitor the
   system or session buses respectively. If neither is specified,
   dbus-monitor monitors the session bus.

   dbus-monitor has two different text output modes: the 'classic'-style
   monitoring mode, and profiling mode. The profiling format is a compact
   format with a single line per message and microsecond-resolution timing
   information. The --profile and --monitor options select the profiling
   and monitoring output format respectively.

   dbus-monitor also has two binary output modes. The binary mode,
   selected by --binary, outputs the entire binary message stream (without
   the initial authentication handshake). The PCAP mode, selected by
   --pcap, adds a PCAP file header to the beginning of the output, and
   prepends a PCAP message header to each message; this produces a binary
   file that can be read by, for instance, Wireshark.

   If no mode is specified, dbus-monitor uses the monitoring output
   format.

   In order to get dbus-monitor to see the messages you are interested in,
   you should specify a set of watch expressions as you would expect to be
   passed to the dbus_bus_add_match function.

   The message bus configuration may keep dbus-monitor from seeing all
   messages, especially if you run the monitor as a non-root user.

OPTIONS

   --system
       Monitor the system message bus.

   --session
       Monitor the session message bus. (This is the default.)

   --address ADDRESS
       Monitor an arbitrary message bus given at ADDRESS.

   --profile
       Use the profiling output format.

   --monitor
       Use the monitoring output format. (This is the default.)

EXAMPLE

   Here is an example of using dbus-monitor to watch for the gnome typing
   monitor to say things

         dbus-monitor "type='signal',sender='org.gnome.TypingMonitor',interface='org.gnome.TypingMonitor'"

AUTHOR

   dbus-monitor was written by Philip Blundell. The profiling output mode
   was added by Olli Salli.

BUGS

   Please send bug reports to the D-Bus mailing list or bug tracker, see
   http://www.freedesktop.org/software/dbus/





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