MKNOD(8)                     System Manager's Manual                    MKNOD(8)

     mknod – make device special file

     mknod [-F format] name [c | b] major minor
     mknod [-F format] name [c | b] major unit subunit
     mknod name [c | b] number
     mknod name w

     The mknod command creates device special files.

     To make nodes manually, the required arguments are:

     name    Device name, for example “sd” for a SCSI disk on an HP300 or a
             “pty” for pseudo-devices.

     b | c | w
             Type of device. If the device is a block type device such as a tape
             or disk drive which needs both cooked and raw special files, the
             type is b.  Whiteout nodes are type w.  All other devices are
             character type devices, such as terminal and pseudo devices, and
             are type c.

     major   The major device number is an integer number which tells the kernel
             which device driver entry point to use.

     minor   The minor device number tells the kernel which one of several
             similar devices the node corresponds to; for example, it may be a
             specific serial port or pty.

     unit and subunit
             The unit and subunit numbers select a subset of a device; for
             example, the unit may specify a particular SCSI disk, and the
             subunit a partition on that disk.  (Currently this form of
             specification is only supported by the bsdos format, for
             compatibility with the BSD/OS mknod(8).)

     Device numbers for different operating systems may be packed in a different
     format.  To create device nodes that may be used by such an operating
     system (e.g. in an exported file system used for netbooting), the -F option
     is used.  The following formats are recognized: native, 386bsd, 4bsd,
     bsdos, freebsd, hpux, isc, linux, netbsd, osf1, sco, solaris, sunos, svr3,
     svr4 and ultrix.

     Alternatively, a single opaque device number may be specified.

     mkfifo(1), mkfifo(2), mknod(2)

     A mknod command appeared in Version 6 AT&T UNIX.  The -F option appeared in
     NetBSD 1.4.

NetBSD 1.4                     September 11, 1998                     NetBSD 1.4