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