1.\" Copyright (c) 1985, 1990, 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.\" 4. Neither the name of the University nor the names of its contributors 13.\" may be used to endorse or promote products derived from this software 14.\" without specific prior written permission. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 17.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.\" @(#)lptest.1 8.2 (Berkeley) 12/30/93 29.\" $FreeBSD$ 30.\" 31.Dd December 30, 1993 32.Dt LPTEST 1 33.Os 34.Sh NAME 35.Nm lptest 36.Nd generate lineprinter ripple pattern 37.Sh SYNOPSIS 38.Nm 39.Op Ar length 40.Op Ar count 41.Sh DESCRIPTION 42The 43.Nm 44utility writes the traditional "ripple test" pattern on standard output. 45In 96 lines, 46this pattern will print all 96 printable 47.Tn ASCII 48characters 49in each position. 50While originally created to test printers, it is quite 51useful for testing terminals, 52driving terminal ports for debugging purposes, 53or any other task where a quick supply of random data is needed. 54.Pp 55The 56.Ar length 57argument specifies the output line length if the default 58length of 79 is inappropriate. 59.Pp 60The 61.Ar count 62argument specifies the number of output lines to be generated if 63the default count of 200 is inappropriate. 64Note that if 65.Ar count 66is to be specified, 67.Ar length 68must be also be specified. 69.Sh HISTORY 70A 71.Nm 72utility appeared in 73.Bx 4.3 . 74