Is there such a thing as list of available D-Bus services? I've stumbled upon a few, like those provided by NetworkManager, Rhythmbox, Skype, HAL.
I wonder if I can find a rather complete list of provided services/interfaces.
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On QT setups (short commands and clean, human readable output) you can run:
qdbus
will list list the services available on the session bus and
qdbus --system
will list list the services available on the system bus.
On any setup you can use dbus-send
dbus-send --print-reply --dest=org.freedesktop.DBus /org/freedesktop/DBus org.freedesktop.DBus.ListNames
Just like qdbus, if --session or no message bus is specified, dbus will send to the login session message bus. So the above will list the services available on the session bus.
Use --system if you want instead to use the system wide message bus:
dbus-send --system --print-reply --dest=org.freedesktop.DBus /org/freedesktop/DBus org.freedesktop.DBus.ListNames
You could also use DFeet if you prefer a graphical tool (see the other answers for more GUI options).
answered Aug 25 '12 at 14:13
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1@don-crissti how to the to list all object-paths under a service with
dbus-sendorgdbus? – Khurshid Alam Jan 8 '15 at 9:06 -
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The python way is the beautiful way.
System services:
import dbus
for service in dbus.SystemBus().list_names():
print(service)
Session services:
import dbus
for service in dbus.SessionBus().list_names():
print(service)
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Upvoted. I asked a follow-up question to your answer. unix.stackexchange.com/questions/203410/… – user768421 May 15 '15 at 1:58
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I have a question, in a Plasma 5 desktop environment, the service org.kde.Spectacle is used for taking screenshot (and it's working), but it is neither listed in system bus nor session bus, why is that? – Meow Nov 1 '16 at 12:20
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To help those who may be looking: for at least python 2.7.13 and 3.6, the package needed for this is dbus-python, installable with
pip install dbus-python. The python-dbus package is also available (I was unable to get in working in the 2 minutes I tried). – bschlueter Aug 30 '17 at 5:09
qdbusviewer is your best friend; it allows you to send D-bus messages as well:
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Seems broken as of 2014. It lists the services but can't send messages.. – Pithikos Nov 6 '14 at 15:49
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6I can't even start it on Ubuntu 14.04. It fails with:
qdbusviewer: could not exec '/usr/lib/i386-linux-gnu/qt4/bin/qdbusviewer': No such file or directory– kasperd Dec 28 '14 at 23:54 -
4
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1@sherrellbc Please consider adding
d-feetas an answer to make it more visible – mivk Feb 12 '17 at 14:18 -
gdbus is part of glib2 and supports Bash completions. Here is how to use it (on Fedora):
bash-4.4$ source /usr/share/bash-completion/completions/gdbus
bash-4.4$ gdbus call --system --dest <TAB><TAB>
This will show all possible destinations. To get a list of the available interfaces DBus exports the org.freedesktop.DBus.ListNames method. You can call it by running:
gdbus call --system --dest org.freedesktop.DBus \
--object-path /org/freedesktop/DBus \
--method org.freedesktop.DBus.ListNames
Unfortunately this leads to unreadable output. Fortunately the output is valid python, so this is possible:
gdbus call --system --dest org.freedesktop.DBus \
--object-path /org/freedesktop/DBus \
--method org.freedesktop.DBus.ListNames | \
python -c 'import sys, pprint; pprint.pprint(eval(sys.stdin.read()))'
I don't usually do this, but is a nice trick to keep on sleeve. I use gdbus for introspecting and proving concepts before moving to code. The bash completion saves a lot of typing and avoid typos. Would be nice to have gdbus displaying a nicer output.
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1Neat tool recommendation; thanks! As of F31 at least note that Bash completions are loaded by default, no need to source them manually. – tne Apr 19 '20 at 8:08
