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.\" 3. 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: src/usr.sbin/lpr/lptest/lptest.1,v 1.3.2.3 2002/06/21 16:40:58 charnier Exp $ 30.\" $DragonFly: src/usr.sbin/lpr/lptest/lptest.1,v 1.2 2003/06/17 04:29:56 dillon Exp $ 31.\" 32.Dd December 30, 1993 33.Dt LPTEST 1 34.Os 35.Sh NAME 36.Nm lptest 37.Nd generate lineprinter ripple pattern 38.Sh SYNOPSIS 39.Nm 40.Op Ar length 41.Op Ar count 42.Sh DESCRIPTION 43The 44.Nm 45utility writes the traditional "ripple test" pattern on standard output. 46In 96 lines, 47this pattern will print all 96 printable 48.Tn ASCII 49characters 50in each position. 51While originally created to test printers, it is quite 52useful for testing terminals, 53driving terminal ports for debugging purposes, 54or any other task where a quick supply of random data is needed. 55.Pp 56The 57.Ar length 58argument specifies the output line length if the default 59length of 79 is inappropriate. 60.Pp 61The 62.Ar count 63argument specifies the number of output lines to be generated if 64the default count of 200 is inappropriate. 65Note that if 66.Ar count 67is to be specified, 68.Ar length 69must be also be specified. 70.Sh HISTORY 71A 72.Nm 73utility appeared in 74.Bx 4.3 . 75