1zero(7D)                            Devices                           zero(7D)
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NAME

6       zero - source of zeroes
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DESCRIPTION

9       A zero special file is a source of zeroed unnamed memory.
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12       Reads  from  a zero special file always return a buffer full of zeroes.
13       The file is of infinite length.
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16       Writes to a zero special file are always successful, but the data writ‐
17       ten is ignored.
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20       Mapping  a  zero special file creates a zero-initialized unnamed memory
21       object of a length equal to the length of the mapping and rounded up to
22       the  nearest  page  size as returned by sysconf. Multiple processes can
23       share such a zero special file object provided a common ancestor mapped
24       the object MAP_SHARED.
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FILES

27       /dev/zero
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SEE ALSO

31       fork(2), mmap(2), sysconf(3C)
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35SunOS 5.11                        3 Jul 1990                          zero(7D)
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