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NULL(4)                    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

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

NetBSD 6.1.5                     June 5, 1993                     NetBSD 6.1.5