1.\" 2.\" Copyright (c) 1994 James A. Jegers 3.\" All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. The name of the author may not be used to endorse or promote products 11.\" derived from this software without specific prior written permission 12.\" 13.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 14.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 15.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 16.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 17.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 18.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 19.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 20.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 22.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23.\" 24.\" $FreeBSD$ 25.\" 26.Dd July 10, 1995 27.Dt SPRAY 8 28.Os 29.Sh NAME 30.Nm spray 31.Nd send many packets to host 32.Sh SYNOPSIS 33.Nm 34.Op Fl c Ar count 35.Op Fl d Ar delay 36.Op Fl l Ar length 37.Ar host 38.Sh DESCRIPTION 39.Nm Spray 40sends multiple RPC packets to 41.Ar host 42and records how many of them were correctly received and how long it took. 43.Pp 44The options are as follows: 45.Bl -tag -width indent 46.It Fl c Ar count 47Send 48.Ar count 49packets. 50.It Fl d Ar delay 51Pause 52.Ar delay 53microseconds between sending each packet. 54.It Fl l Ar length 55Set the length of the packet that holds the RPC call message to 56.Ar length 57bytes. 58Not all values of 59.Ar length 60are possible because RPC data is encoded using XDR. 61.Nm Spray 62rounds up to the nearest possible value. 63.El 64.Pp 65.Nm Spray 66is intended for use in network testing, measurement, and management. 67This command 68.Em "can be very hard on a network and should be used with caution" . 69.Sh SEE ALSO 70.Xr netstat 1 , 71.Xr ifconfig 8 , 72.Xr ping 8 , 73.Xr rpc.sprayd 8 74