1.\" $OpenBSD: worms.6,v 1.16 2022/03/31 17:27:15 naddy Exp $ 2.\" 3.\" Copyright (c) 1989, 1993 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.\" @(#)worms.6 8.1 (Berkeley) 5/31/93 31.\" 32.Dd $Mdocdate: March 31 2022 $ 33.Dt WORMS 6 34.Os 35.Sh NAME 36.Nm worms 37.Nd animate worms on a display terminal 38.Sh SYNOPSIS 39.Nm worms 40.Op Fl ft 41.Op Fl d Ar delay 42.Op Fl l Ar length 43.Op Fl n Ar number 44.Sh DESCRIPTION 45A 46.Ux 47version of the DEC-2136 program 48.Dq worms . 49.Pp 50The options are as follows: 51.Bl -tag -width "-l length" 52.It Fl d Ar delay 53Specifies a delay, in milliseconds, between each update. 54This is useful for fast terminals. 55Reasonable values are around 20\(en200. 56The default is based on the terminal speed. 57If the terminal is 9600 baud or slower, no delay is used. 58Otherwise, the delay is computed via the following formula: 59.Pp 60.Dl delay = speed / 9600 \- 1 61.It Fl f 62Makes a 63.Dq field 64for the worm(s) to eat. 65.It Fl l Ar length 66Specifies a length for each worm; the default is 16. 67.It Fl n Ar number 68Specifies the number of worms; the default is 3. 69.It Fl t 70Makes each worm leave a trail behind it. 71.El 72.Sh BUGS 73The lower-right-hand character position will not be updated properly 74on a terminal that wraps at the right margin. 75