In Unix-like operating systems, /dev/null or the null device is a special file that discards all data written to it (but reports that the write operation succeeded), and provides no data to any process that reads from it (it returns EOF). In Unix programmer jargon, it may also be called the bit bucket or black hole. The null device is typically used for disposing of unwanted output streams of a process, or as a convenient empty file for input streams. This is usually done by redirection. This entity is a common inspiration for technical jargon expressions and metaphors by Unix programmers, e.g. "please send complaints to /dev/null," "my mail got archived in /dev/null," and "redirect to /dev/null," being jocular ways of saying, respectively: "don't bother to send any complaints," "my mail got deleted," and "go to hell." A famous advertisement for the Titanium Pow