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.Dd July 10, 1995 25.Dt SPRAY 8 26.Os FreeBSD 27.Sh NAME 28.Nm spray 29.Nd send many packets to host 30.Sh SYNOPSIS 31.Nm spray 32.Op Fl c Ar count 33.Op Fl d Ar delay 34.Op Fl l Ar length 35.Ar host 36.Sh DESCRIPTION 37.Nm Spray 38sends multiple RPC packets to 39.Ar host 40and records how many of them were correctly received and how long it took. 41.Pp 42The options are as follows: 43.Bl -tag -width indent 44.It Fl c Ar count 45Send 46.Ar count 47packets. 48.It Fl d Ar delay 49Pause 50.Ar delay 51microseconds between sending each packet. 52.It Fl l Ar length 53Set the length of the packet that holds the RPC call message to 54.Ar length 55bytes. 56Not all values of 57.Ar length 58are possible because RPC data is encoded using XDR. 59.Nm Spray 60rounds up to the nearest possible value. 61.El 62.Pp 63.Nm Spray 64is intended for use in network testing, measurement, and management. 65This command 66.Em "can be very hard on a network and should be used with caution" . 67.Pp 68.Sh SEE ALSO 69.Xr netstat 1 , 70.Xr ifconfig 8 , 71.Xr ping 8 , 72.Xr rpc.sprayd 8 73