Hello in Portugal?
Olá (It is customary, here, to say 'Bom dia' during the morning, 'Boa tarde' during the afternoon and 'Boa noite' for the evening and night time. 'Como esta' literally means 'how are you'. This may follow each of the salutations. 'Olá ' is normally used with people who are a little more than an acquaintance. My having said that, I use ' olá ' virtually most of the time! FRC)