Create HS256 in linux command

Questions & Help Questions
1

Hello, I need to create HS256 to save this for encryption, in this elixir I can do it with:

JOSE.JWS.generate_key(%{"alg" => "HS256"}) |> JOSE.JWK.to_map |> elem(1)

but how can I do this in linux command? because I have a shell which creates docker image for me.

I see this page but I think this page result is different with elixir code

Thanks