Thanks David,
In the US we called them scallions, spring onions or green onions, but here in Portugal, I’ve only heared them referred to as cebolinha … and maybe they can only be found in the spring (since they just started showing up in the supermarkets. I wanted to know how to ask for it and not have to clarify that I’m not talking about chives. I guess I could try cebola de primavera.