*****部门经理*****
mail -s "Hello, world." bob@b12
Bob, could you please write me a program that prints "Hello, world."?
I need it by tomorrow.
^D
*****总经理*****
% zmail jim
I need a "Hello, world." program by this afternoon.
*****(跨国企业)首席行政长官*****
% letter
letter: Command not found.
% mail
To: ^X ^F ^C
% help mail
help: Command not found.
% 他妈的!
!: Event unrecognized
% logout