D-Bus-examples.md

 # D-Bus Examples
 
+## List all names on a bus
+
+In Python:
+
+``` python
+import dbus
+b = dbus.SystemBus()
+names = b.list_names()
+```
+
+Using `gdbus`:
+```
+gdbus call --system --dest org.freedesktop.DBus --object-path /org/freedesktop/DBus --method org.freedesktop.DBus.ListNames
+```
+
+## Introspection
+
 Introspect an interface on a system bus object (UPower in this case):
 
 ``` python