null.4

<B>Digital的Unix操作系统VAX 4.2源码</B>

.\" SCCSID: @(#)null.4	8.1	9/11/90
.\" SCCSID: @(#)null.4	8.1	9/11/90
.TH null 4
.SH Name
null \- data sink
.SH Description
.NXR "null file"
.NXR "data sink"
Data written on a 
.PN null 
special file is discarded.
.PP
Reads from a 
.PN null 
special file always return 0 bytes.
.SH Files
.PN /dev/null
.SH See Also
MAKEDEV(8)