My latest blog post includes instructions on how to download and install the open-plc-utils in Linux:

https://fitzcarraldoblog.wordpress.com/2021/04/23/using-open-plc-utils-in-linux-with-powerline-homeplug-adapters/

I also include a Bash script in that post which can be used to interrogate the Powerline adapters in a network in order to obtain information on their status and parameters.

My blog post last year explains how to read the PIB from a Powerline adapter, and how to update the firmware in a Powerline adapter using the open-plc-utils in Linux if you have a PIB file and an NVM file:

https://fitzcarraldoblog.wordpress.com/2020/07/22/updating-the-powerline-adapters-in-my-home-network/