null(4) [bsd man page]

NULL(4) 						     Kernel Interfaces Manual							   NULL(4)

NAME

       null - data sink

SYNOPSIS

       major device number(s):
	    raw: 1
       minor device encoding:
	    mem: 0;  kmem: 1;  null: 2

DESCRIPTION

       Data written on a null special file is discarded.

       Reads from a null special file always return 0 bytes.

FILES

       /dev/null
       /dev/MAKEDEV	   script to create special files
       /dev/MAKEDEV.local  script to localize special files

SEE ALSO

       mem(4)

3rd Berkeley Distribution					 January 28, 1988							   NULL(4)

MAKEDEV.LOCAL(8)					    BSD System Manager's Manual 					  MAKEDEV.LOCAL(8)

NAME

     MAKEDEV.local -- create site-specific device special files

SYNOPSIS

     MAKEDEV.local [-fMsu] [-m mknod] [-p pax] [-t mtree] {all | site-specific-argument} [...]

DESCRIPTION

     MAKEDEV.local is used to create site-specific device special files.  Each argument may be the word all or a site-specific argument.  By
     default, there are no valid site-specific arguments, and the all argument has no effect; This may be changed by editing the script.

     The script is in /dev/MAKEDEV.local.  Devices are created in the current working directory; in normal use, MAKEDEV.local should be invoked
     with /dev as the current working directory.

     Supported options for MAKEDEV.local are the same as for MAKEDEV(8).

FILES

     /dev		 special device files directory
     /dev/MAKEDEV	 script that invokes MAKEDEV.local with the all argument.
     /dev/MAKEDEV.local  script described in this man page

SEE ALSO

     config(1), intro(4), MAKEDEV(8), mknod(8)

HISTORY

     The MAKEDEV.local command appeared in 4.2BSD.  Handling of the same command line options as MAKEDEV(8), and the use of MAKEDEV(8) as a func-
     tion library, was added in NetBSD 5.0.

NOTES

     The relationship between MAKEDEV.local and MAKEDEV(8) is complex:

     o	 If MAKEDEV(8) is invoked with the all or local argument, then it will invoke MAKEDEV.local as a child process, with options similar to
	 those that were originally passed to MAKEDEV(8), and with the all argument.

     o	 MAKEDEV.local uses shell functions defined in MAKEDEV(8).  This is done by loading MAKEDEV(8) using the shell ``.'' command, with the
	 MAKEDEV_AS_LIBRARY variable set (to inform MAKEDEV(8) that it should behave as a function library, not as an independent program).

BSD
								  August 6, 2011							       BSD