1.\" Copyright (c) 1980, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)mknod.8 8.2 (Berkeley) 12/11/93 33.\" $FreeBSD$ 34.\" 35.Dd December 11, 1993 36.Dt MKNOD 8 37.Os 38.Sh NAME 39.Nm mknod 40.Nd build special file 41.Sh SYNOPSIS 42.Nm 43.Ar name 44.Op Cm c | Cm b 45.Ar major minor 46.Op Ar owner : Ns Ar group 47.Sh DESCRIPTION 48The 49.Nm 50utility creates device special files. 51To make nodes manually, the four required arguments are: 52.Pp 53.Bl -tag -width indent 54.It Ar name 55Device name, for example 56.Dq sd 57for a SCSI disk on an HP300 or a 58.Dq pty 59for pseudo-terminals. 60.It Cm b | Cm c 61Type of device. 62If the 63device is a block type device such as a tape or disk drive which needs 64both cooked and raw special files, 65the type is 66.Cm b . 67All other devices are character type devices, such as terminal 68and pseudo devices, and are type 69.Cm c . 70.It Ar major 71The major device number is an integer number which tells the kernel 72which device driver entry point to use. To learn what 73major device number to use for a particular device, check 74.Pa /usr/src/sys/conf/majors . 75.It Ar minor 76The minor device number tells the kernel which subunit 77the node corresponds to on the device; for example, 78a subunit may be a file system partition 79or a tty line. 80.It Ar owner : Ns Ar group 81The 82.Ar owner 83.Ar group 84operand pair is optional, however, if one is specified, they both must be 85specified. 86The 87.Ar owner 88may be either a numeric user ID or a user name. 89If a user name is also a numeric user ID, the operand is used as a 90user name. 91The 92.Ar group 93may be either a numeric group ID or a group name. 94Similar to the user name, 95if a group name is also a numeric group ID, the operand is used as a 96group name. 97.El 98.Pp 99Major and minor device numbers can be given in any format acceptable to 100.Xr strtoul 3 , 101so that a leading 102.Ql 0x 103indicates a hexadecimal number, and a leading 104.Ql 0 105will cause the number to be interpreted as octal. 106.Sh COMPATIBILITY 107The 108.Xr chown 8 Ns - Ns 109like functionality is specific to 110.Fx . 111.Sh SEE ALSO 112.Xr mkfifo 1 , 113.Xr mknod 2 , 114.Xr chown 8 115.Sh HISTORY 116A 117.Nm 118utility appeared in 119.At v6 . 120