NULL(4) MachTen Programmer’s 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.

4.4BSD June 5, 1993 1