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. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)lptest.1 8.2 (Berkeley) 12/30/93 33.\" $FreeBSD$ 34.\" 35.Dd December 30, 1993 36.Dt LPTEST 1 37.Os 38.Sh NAME 39.Nm lptest 40.Nd generate lineprinter ripple pattern 41.Sh SYNOPSIS 42.Nm 43.Op Ar length 44.Op Ar count 45.Sh DESCRIPTION 46The 47.Nm 48utility writes the traditional "ripple test" pattern on standard output. 49In 96 lines, 50this pattern will print all 96 printable 51.Tn ASCII 52characters 53in each position. 54While originally created to test printers, it is quite 55useful for testing terminals, 56driving terminal ports for debugging purposes, 57or any other task where a quick supply of random data is needed. 58.Pp 59The 60.Ar length 61argument specifies the output line length if the default 62length of 79 is inappropriate. 63.Pp 64The 65.Ar count 66argument specifies the number of output lines to be generated if 67the default count of 200 is inappropriate. 68Note that if 69.Ar count 70is to be specified, 71.Ar length 72must be also be specified. 73.Sh HISTORY 74A 75.Nm 76utility appeared in 77.Bx 4.3 . 78