dbus-send(1) dbus-send(1)

NAME dbus-send - Send a message to a message bus

SYNOPSIS dbus-send [--system | --session] [--dest=NAME] [--print-reply] [--type=TYPE] <destination object path> <message name> [contents ...]

DESCRIPTION The dbus-send command is used to send a message to 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-send to send messages to the system or session buses respectively. If neither is specified, dbus- send sends to the session bus.

Nearly all uses of dbus-send must provide the --dest argument which is the name of a connection on the bus to send the message to. If --dest is omitted, no destination is set.

The object path and the name of the message to send must always be specified. Following arguments, if any, are the message contents (mes- sage arguments). These are given as type-specified values and may include containers (arrays, dicts, and variants) as described below.

<contents> ::= <item> | <container> [ <item> | <container>...] <item> ::= <type>:<value> <container> ::= <array> | <dict> | <variant> <array> ::= array:<type>:<value>[,<value>...] <dict> ::= dict:<type>:<type>:<key>,<value>[,<key>,<value>...] <variant> ::= variant:<type>:<value> <type> ::= string | int16 | uint 16 | int32 | uint32 | int64 | uint64 | double | byte | boolean | objpath

D-Bus supports more types than these, but dbus-send currently does not. Also, dbus-send does not permit empty containers or nested containers (e.g. arrays of variants).

Here is an example invocation:

dbus-send --dest=org.freedesktop.ExampleName /org/freedesktop/sample/object/name org.freedesktop.ExampleInterface.ExampleMethod int32:47 string: hello world double:65.32 array:string:"1st item","next item","last item" dict:string:int32:"one",1,"two",2,"three",3 variant:int32:-8 objpath:/org/freedesktop/sample/object/name

Note that the interface is separated from a method or signal name by a dot, though in the actual protocol the interface and the interface mem- ber are separate fields.

OPTIONS The following options are supported:

--dest=NAME Specify the name of the connection to receive the message.

--print-reply Block for a reply to the message sent, and print any reply received.

--system Send to the system message bus.

--session Send to the session message bus. (This is the default.)

--type=TYPE Specify "method_call" or "signal" (defaults to "signal").

AUTHOR dbus-send was written by Philip Blundell.

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