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NULL(4)                  BSD Kernel Interfaces Manual                  NULL(4)

NAME
     null -- the null device

DESCRIPTION
     The null device accepts and reads data as any ordinary (and willing)
     file, but throws it away.  The length of the null device is always zero.

FILES
     /dev/null

SEE ALSO
     zero(4)

HISTORY
     A null device appeared in Version 7 AT&T UNIX.

BSD                              May 31, 2007                              BSD