busctl

Show all peers on the bus

$ busctl list

$ busctl status [service|pid]

$ busctl monitor [service1] [service2] ...

$ busctl tree [service1] [service2] ...

$ busctl introspect [service] [path/to/object]

$ busctl get-property [service] [path/to/object] [interface_name] [property_name]

$ busctl call [service] [path/to/object] [interface_name] [method_name]

busctl [command] [options] [arguments]

busctl introspects and monitors the D-Bus message bus. D-Bus is an inter-process communication system used extensively in Linux for communication between system services and desktop applications.
The tool can list services, monitor message traffic, inspect object hierarchies, and invoke methods on D-Bus objects.

--system

Connect to system bus (default)

Connect to user session bus

Output in JSON format

Disable pager

list

List all peers on the bus

Show process info for a service

Watch message traffic

Show object hierarchy

Examine object interfaces

Read a property value

Set a property value

Invoke a method

dbus-send(1), gdbus(1), systemctl(1)