FreeBSD manual
download PDF document: null.4.pdf
NULL(4) FreeBSD 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
full(4), zero(4)
HISTORY
A null device appeared in Version 4 AT&T UNIX.
FreeBSD 14.0-RELEASE-p11 August 30, 2019 FreeBSD 14.0-RELEASE-p11