Source : Free On-Line Dictionary of Computing

hello, sailor!
     
        Occasional West Coast equivalent of {hello, world}; seems to
        have originated at SAIL, later associated with the game {Zork}
        (which also included "hello, aviator" and "hello,
        implementor").  Originally from the traditional hooker's
        greeting to a swabbie fresh off the boat, of course.
     
        [{Jargon File}]