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