1.\" Copyright (c) 1990 The Regents of the University of California. 2.\" All rights reserved. 3.\" 4.\" This code is derived from software contributed to Berkeley by 5.\" the Institute of Electrical and Electronics Engineers, Inc. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 3. All advertising materials mentioning features or use of this software 16.\" must display the following acknowledgement: 17.\" This product includes software developed by the University of 18.\" California, Berkeley and its contributors. 19.\" 4. Neither the name of the University nor the names of its contributors 20.\" may be used to endorse or promote products derived from this software 21.\" without specific prior written permission. 22.\" 23.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33.\" SUCH DAMAGE. 34.\" 35.\" @(#)mkfifo.1 5.6 (Berkeley) 7/1/91 36.\" $Header: /cvsroot/src/usr.bin/mkfifo/mkfifo.1,v 1.2 1993/07/22 16:30:06 jtc Exp $ 37.\" 38.Dd July 1, 1991 39.Dt MKFIFO 1 40.Os 41.Sh NAME 42.Nm mkfifo 43.Nd make fifos 44.Sh SYNOPSIS 45.Nm mkfifo 46.Op Fl m Ar mode 47.Ar fifo_name ... 48.Sh DESCRIPTION 49.Nm Mkfifo 50creates the fifos requested, in the order specified, 51using mode 52.Li \&0666 53modified by the current 54.Xr umask 2 . 55.Pp 56The options are as follows: 57.Bl -tag -width Ds 58.It Fl m 59Set the file permission bits of newly-created directories to 60.Ar mode . 61The mode is specified as in 62.Xr chmod 1 . 63In symbolic mode strings, the 64.Dq + 65and 66.Dq - 67operators are interpreted relative to an assumed initial mode of 68.Dq a=rw 69.El 70.Pp 71.Nm Mkfifo 72requires write permission in the parent directory. 73.Pp 74.Nm Mkfifo 75exits 0 if successful, and >0 if an error occurred. 76.Sh STANDARDS 77The 78.Nm Mkfifo 79command is expected to be 80.St -p1003.2 81compatible. 82.Sh SEE ALSO 83.Xr mkdir 1 , 84.Xr rm 1 85.Sh HISTORY 86The 87.Nm mkfifo 88command is 89.Ud 90