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 39The 40.Nm 41utility sends multiple RPC packets to 42.Ar host 43and records how many of them were correctly received and how long it took. 44.Pp 45The options are as follows: 46.Bl -tag -width indent 47.It Fl c Ar count 48Send 49.Ar count 50packets. 51.It Fl d Ar delay 52Pause 53.Ar delay 54microseconds between sending each packet. 55.It Fl l Ar length 56Set the length of the packet that holds the RPC call message to 57.Ar length 58bytes. 59Not all values of 60.Ar length 61are possible because RPC data is encoded using XDR. 62The 63.Nm 64utility rounds up to the nearest possible value. 65.El 66.Pp 67The 68.Nm 69utility is intended for use in network testing, measurement, and management. 70This command 71.Em "can be very hard on a network and should be used with caution" . 72.Sh SEE ALSO 73.Xr netstat 1 , 74.Xr ifconfig 8 , 75.Xr ping 8 , 76.Xr rpc.sprayd 8 77