1.\" $OpenBSD: random.6,v 1.8 2022/08/23 06:35:53 tb Exp $ 2.\" 3.\" Copyright (c) 1994 4.\" The Regents of the University of California. All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. Neither the name of the University nor the names of its contributors 15.\" may be used to endorse or promote products derived from this software 16.\" without specific prior written permission. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28.\" SUCH DAMAGE. 29.\" 30.\" @(#)random.6 8.2 (Berkeley) 3/31/94 31.\" 32.Dd $Mdocdate: August 23 2022 $ 33.Dt RANDOM 6 34.Os 35.Sh NAME 36.Nm random 37.Nd random lines from a file or random numbers 38.Sh SYNOPSIS 39.Nm random 40.Op Fl er 41.Op Ar denominator 42.Sh DESCRIPTION 43.Nm 44reads lines from the standard input and copies them to the standard 45output with a probability of 1/denominator. 46The 47.Ar denominator 48must be at least 1, 49its default value is 2. 50.Pp 51The options are as follows: 52.Bl -tag -width Ds 53.It Fl e 54If the 55.Fl e 56option is specified, 57.Nm 58does not read or write anything, and simply exits with a random 59exit value of 0 to the minimum of 255 and 60.Ar denominator 61\&- 1, inclusive. 62.It Fl r 63The 64.Fl r 65option guarantees that the output is unbuffered. 66.El 67.Sh SEE ALSO 68.Xr fortune 6 69