1.\" -*- nroff -*- 2.\" 3.\" Copyright (c) 2003 Scott Long 4.\" 5.\" All rights reserved. 6.\" 7.\" This program is free software. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR 19.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT, 22.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28.\" 29.Dd December 7, 2003 30.Dt HEXDUMP 9 31.Os 32.Sh NAME 33.Nm hexdump 34.Nd "dump a block of bytes to the console in hexadecimal form" 35.Sh SYNOPSIS 36.In sys/systm.h 37.Ft void 38.Fn hexdump "void *ptr" "int length" "const char *hdr" "int flags" 39.Sh DESCRIPTION 40The 41.Fn hexdump 42function prints an array of bytes to the console in hexadecimal form, along with 43the 44.Tn ASCII 45representation of the bytes, if possible. 46By default, each line of 47output will start with an offset count, followed by 16 hexadecimal values, 48followed by 16 49.Tn ASCII 50characters. 51.Bl -tag -width indent 52.It Fa ptr 53Pointer to the array of bytes to print. 54It does not need to be 55.Dv NUL Ns 56-terminated. 57.It Fa length 58Number of bytes to print. 59.It Fa hdr 60Pointer to a 61.Dv NUL Ns 62-terminated character string that will be prepended to each 63line of output. 64A value of 65.Dv NULL 66implies that no header will be printed. 67.It Fa flags 68Flags for controlling the formatting of the output. 69.Bl -tag -width ".Dv HD_OMIT_COUNT" 70.It Bits 0-7 71Integer value of the number of bytes to display on each line. 72A value of 0 implies that the default value of 16 will be used. 73.It Bits 8-15 74Character 75.Tn ASCII 76value to use as the separator for the hexadecimal output. 77A value of 0 implies that the default value of 32 78.Tn ( ASCII 79space) will be used. 80.It Dv HD_OMIT_COUNT 81Do not print the offset column at the beginning of each line. 82.It Dv HD_OMIT_HEX 83Do not print the hexadecimal values on each line. 84.It Dv HD_OMIT_CHARS 85Do not print the character values on each line. 86.El 87.El 88.Sh SEE ALSO 89.Xr ascii 7 90.Sh AUTHORS 91This manual page was written by 92.An Scott Long . 93