ubus

OpenWrt system message bus client

TLDR

List available objects

$ ubus list

Get system information

$ ubus call system board

Subscribe to events

$ ubus subscribe [event_name]

Display help

$ ubus

ubus is the command-line interface for interacting with the OpenWrt ubusd message bus server. It allows communication between different system services and provides access to system information and configuration.The ubus system enables IPC (inter-process communication) on OpenWrt routers and embedded systems, allowing scripts and applications to query and control system services.

COMMANDS

list

List available ubus objects

call OBJECT METHOD

Call a method on an object

subscribe EVENT

Subscribe to event notifications

send EVENT

Send an event

INSTALL

nix profile install nixpkgs#ubus

CAVEATS

OpenWrt specific. Requires running ubusd daemon. Available methods depend on installed services. Output is typically JSON formatted.

HISTORY

ubus was developed as part of OpenWrt's system architecture to provide a unified IPC mechanism for the lightweight Linux distribution used on routers and embedded devices.