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Flush
  • v. To delete something, usually superfluous, or to abort an operation. "All that nonsense has been flushed. "
  • [UNIX/C] To force buffered I/O to disk, as with an `fflush(3)' call. This is *not* an abort or deletion as in sense 1, but a demand for early completion!
  • To leave at the end of a day's work (as opposed to leaving for a meal). "I'm going to flush now. " "Time to flush. "
  • To exclude someone from an activity, or to ignore a person. `Flush' was standard ITS terminology for aborting an output operation; one spoke of the text that would have been printed, but was not, as having been flushed. It is speculated that this term arose from a vivid image of flushing unwanted characters by hosing down the internal output buffer, washing the characters away before they could be printed. The UNIX/C usage, on the other hand, was propagated by the `fflush(3)' call in C's standard I/O library (though it is reported to have been in use among BLISS programmers at DEC and on Honeywell and IBM machines as far back as 1965). UNIX/C hackers find the ITS usage confusing, and vice versa.