Manual: dbus-monitor

DBUS-MONITOR(1)						User Commands					     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
       https://www.freedesktop.org/wiki/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 https://www.freedesktop.org/wiki/Software/dbus/

D-Bus 1.16.2												     DBUS-MONITOR(1)