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32 .\" @(#)mknod.8 8.2 (Berkeley) 12/11/93
33 .\" $FreeBSD: src/sbin/mknod/mknod.8,v 1.11.2.10 2003/03/04 15:16:19 keramida Exp $
34 .\" $DragonFly: src/sbin/mknod/mknod.8,v 1.4 2004/07/06 10:45:24 eirikn Exp $
41 .Nd build special file
47 .Op Ar owner : Ns Ar group
51 utility creates device special files.
52 Normally the shell script
54 is used to create special files for commonly known devices; it executes
56 with the appropriate arguments and can make all the files required for the
59 To make nodes manually, the four required arguments are:
61 .Bl -tag -width indent
63 Device name, for example
65 for a SCSI disk on an HP300 or a
71 device is a block type device such as a tape or disk drive which needs
72 both cooked and raw special files,
75 All other devices are character type devices, such as terminal
76 and pseudo devices, and are type
79 The major device number is an integer number which tells the kernel
80 which device driver entry point to use. To learn what
81 major device number to use for a particular device, check
84 .Pa /usr/src/sys/conf/majors .
86 The minor device number tells the kernel which subunit
87 the node corresponds to on the device; for example,
88 a subunit may be a file system partition
90 .It Ar owner : Ns Ar group
94 operand pair is optional, however, if one is specified, they both must be
98 may be either a numeric user ID or a user name.
99 If a user name is also a numeric user ID, the operand is used as a
103 may be either a numeric group ID or a group name.
104 Similar to the user name,
105 if a group name is also a numeric group ID, the operand is used as a
109 Major and minor device numbers can be given in any format acceptable to
113 indicates a hexadecimal number, and a leading
115 will cause the number to be interpreted as octal.
119 like functionality is specific to
123 and was added so that