gdbus: add page (#17668)

Co-authored-by: Managor <42655600+Managor@users.noreply.github.com>
Co-authored-by: Dylan <145150333+dmmqz@users.noreply.github.com>

pages/linux/gdbus.md

@@ -0,0 +1,29 @@
+# gdbus
+
+> Interact with D-Bus objects.
+> Part of GLib.
+> More information: <https://manned.org/gdbus>.
+
+- List all names on the session bus:
+
+`gdbus list-names --session`
+
+- List all names on the system bus:
+
+`gdbus list-names --system`
+
+- Introspect an object to see its interfaces and methods:
+
+`gdbus introspect --session --dest {{destination_bus_name}} --object-path /{{path/to/object}}`
+
+- Call a method on an object with arguments:
+
+`gdbus call --session --dest {{destination_bus_name}} --object-path /{{path/to/object}} --method {{interface.method_name}} {{argument1 argument2 ...}}`
+
+- Emit a signal from an object with arguments:
+
+`gdbus emit --session --object-path /{{path/to/object}} --signal {{interface.signal_name}} {{argument1 argument2 ...}}`
+
+- Monitor all messages on the session bus:
+
+`gdbus monitor --session`