using the name of sb/sth :
She asked for you by name.
The principal knows all the students by name.
I only know her by name (= I have heard about her but I have not met her).
using the name of sb/sth :
She asked for you by name.
The principal knows all the students by name.
I only know her by name (= I have heard about her but I have not met her).
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005