xref: /dragonfly/usr.sbin/lpr/lptest/lptest.1 (revision c69bf40f)
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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