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
null first appeared in AT&T UNIX as an empty file, /dev/null, which returned end of file when being read from. An implementation which could also be written to first appeared in AT&T UNIX.