labgrid-client interface to control boards


Rouven Czerwinski <>






Copyright (C) 2016-2017 Pengutronix. This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.



Manual section:


Manual group:

embedded testing


labgrid-client --help

labgrid-client -p <place> <command>

labgrid-client places|resources


Labgrid is a scalable infrastructure and test architecture for embedded (linux) systems.

This is the client to control a boards status and interface with it on remote machines.


-h, --help

display command line help

-p PLACE, --place PLACE

specify the place to operate on

-x URL, --crossbar URL

the crossbar url of the coordinator, defaults to ws://

-c CONFIG, --config CONFIG

set the configuration file

-s STATE, --state STATE

set an initial state before executing a command, requires a configuration file and strategy


strategy state to force into before switching to desired state, requires a desired state (-s/--state/LG_STATE)

-d, --debug

enable debugging

-v, --verbose

increase verbosity

-P PROXY, --proxy PROXY

proxy connections over ssh


The configuration file follows the description in labgrid-device-config(5).


Various labgrid-client commands use the following environment variable:


This variable can be used to specify a place without using the -p option, the -p option overrides it.


This variable can be used to specify a reservation for the wait command and for the + place expansion.


This variable can be used to specify a state which the device transitions into before executing a command. Requires a configuration file and a Strategy specified for the device.


This variable can be used to specify an initial state the device is known to be in. This is useful during development. The Strategy used must implement the force() method. A desired state must be set using LG_STATE or -s/--state.


This variable can be used to specify the configuration file to use without using the --config option, the --config option overrides it.


This variable can be used to set the default crossbar URL (instead of using the -x option).


This variable can be used to set the default crossbar realm to use instead of realm1.


This variable can be used to specify a SSH proxy hostname which should be used to connect to the coordinator and any resources which are normally accessed directly.


Override the hostname used when accessing a resource. Typically only useful for CI pipelines where the hostname may not be consistent between pipeline stages.


Override the username used when accessing a resource. Typically only useful for CI pipelines where the username may not be consistent between pipeline stages.


Set the connection timeout when using SSH (The ConnectTimeout option). If unspecified, defaults to 30 seconds.


Match patterns are used to assign a resource to a specific place. The format is: exporter/group/cls/name, exporter is the name of the exporting machine, group is a name defined within the exporter, cls is the class of the exported resource and name is its name. Wild cards in match patterns are explicitly allowed, * matches anything.


monitor Monitor events from the coordinator

resources (r) List available resources

places (p) List available places

who List acquired places by user

show Show a place and related resources

create Add a new place (name supplied by -p parameter)

delete Delete an existing place

add-alias alias Add an alias to a place

del-alias alias Delete an alias from a place

set-comment comment Update or set the place comment

set-tags key=value Set place tags (key=value)

add-match match Add one (or multiple) match pattern(s) to a place, see MATCHES

del-match match Delete one (or multiple) match pattern(s) from a place, see MATCHES

add-named-match match name Add one match pattern with a name to a place

acquire (lock) Acquire a place

allow user Allow another user to access a place

release (unlock) Release a place

release-from host/user Atomically release a place, but only if acquired by a specific user.

Note that this command returns success as long as the specified user no longer owns the place, meaning it may be acquired by another user or not at all.

env Generate a labgrid environment file for a place

power (pw) action Change (or get) a place’s power status, where action is one of get, on, off, cycle

io action [name] Interact with GPIO (OneWire, relays, …) devices, where action is one of high, low, get

console (con) [name] Connect to the console

dfu arg Run dfu commands

fastboot arg Run fastboot with argument

flashscript script arg Run arbitrary script with arguments to flash device

bootstrap filename Start a bootloader

sd-mux action Switch USB SD Muxer, where action is one of dut (device-under-test), host, off

usb-mux action Switch USB Muxer, where action is one of off, dut-device, host-dut, host-device, host-dut+host-device

ssh [command] Connect via SSH. Additional arguments are passed to ssh.

scp source destination Transfer file via scp (use ‘:dir/file’ for the remote side)

rsync source destination Transfer files via rsync (use ‘:dir/file’ for the remote side)

sshfs remotepath mountpoint Mount a remote path via sshfs

forward Forward local port to remote target

telnet Connect via telnet

video Start a video stream

audio Start an audio stream

tmc command Control a USB TMC device

write-files filename(s) Copy files onto mass storage device

write-image filename Write images onto block devices (USBSDMux, USB Sticks, …)

reserve filter Create a reservation

cancel-reservation token Cancel a pending reservation

wait token Wait for a reservation to be allocated

reservations List current reservations

export filename Export driver information to file (needs environment with drivers)

version Print the labgrid version


If a target contains multiple Resources of the same type, named matches need to be used to address the individual resources. In addition to the match taken by add-match, add-named-match also takes a name for the resource. The other client commands support the name as an optional parameter and will inform the user that a name is required if multiple resources are found, but no name is given.

If one of the resources should be used by default when no resource name is explicitly specified, it can be named default.


To retrieve a list of places run:

$ labgrid-client places

To access a place, it needs to be acquired first, this can be done by running the acquire command and passing the placename as a -p parameter:

$ labgrid-client -p <placename> acquire

Open a console to the acquired place:

$ labgrid-client -p <placename> console

Add all resources with the group “example-group” to the place example-place:

$ labgrid-client -p example-place add-match */example-group/*/*