V7/usr/man/man4/null.4

Find at most related files.
including files from this version of Unix. 
.TH NULL 4 
.SH NAME
null \- data sink
.SH DESCRIPTION
Data written on 
a null special file
is discarded.
.PP
Reads from 
a null special file
always return 0 bytes.
.SH FILES
/dev/null