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is written to, the kernel tells the program it wrote everything to it (without actually writing it anywhere), and when read from, the reading program is told that it has reached the end of the file. It is a device file (it can be made with
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device that performs a similar function (but is implemented as part of the file name processing – no actual file exists by that name).
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for instance), but does not reference any hardware.
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104:December 2009
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