Setup a new device

WebOS provides a CLI named ares allowing to communicate with LG devices or emulator.

Open the LG Developer app on your TV.

Register the device with ares#

Then open a terminal and type the following command:

ares-setup-device

1. Select: choose add
2. Enter Device Name: Enter the target device name
3. Enter Device IP address: Target device address (displayed on LG developer app)
4. Enter Device Port: Mostly 9922
5. Enter ssh user: prisoner for LG devices, developer for emulator
6. Enter description: Any description to remember which device it is
7. Select authentication: Choose ssh key
8. Enter ssh private key file name: By default, it must be <device_name>_webos (with device name defined in step 2)
9. Enter key’s passphrase: Passphrase displayed on LG Developer app
10. Save: Yes The new device is then listed automatically.

More information here: ares-setup-device

Get an ssh key#

This step aims at getting ssh key file used by LG devices and ares CLI to communicate together.
Open a terminal and type the following command:

ares-novacom -d <device_name> --getkey

When asked, enter the passphrase that is displayed on the LG Developer app (it must be the same as defined in step 9 of previous registration).

More information here: ares-novacom

Test the connection#

Open a terminal and type the following command:

ares-novacom -d lg30 --run "echo It works"

If It works is displayed, then the connection test was successful.