Inspired by this question, here's another Linux command representing a famous line:
cp -a ~she ~
Which line is it?
My best guess would be
"I'll have what she's having" from When Harry met Sally, 1989
You are copying (cp) everything from user she to the current user (~) while trying to keep everything as close as possible to the orginal (by using option -a).
So, I (the current user) will have what the user (she) is having (by copying the data with the -a option)