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.\" $FreeBSD$ 30.\" 31.Dd December 7, 2003 32.Os 33.Dt HEXDUMP 9 34.Sh NAME 35.Nm hexdump 36.Nd "Dump a block of bytes to the console in hexadecimal form" 37.Sh SYNOPSIS 38.In sys/systm.h 39.Ft void 40.Fn hexdump "void *ptr" "int length" "const char *hdr" "int flags" 41.Sh DESCRIPTION 42Hexdump prints an array of bytes to the console in hexadecimal form, along with 43the ASCII representation of the bytes, if possible. 44By default, each line of 45output will start with an offset count, followed by 16 hexadecimal values, 46followed by 16 ASCII characters. 47.Bl -tag -width 6n 48.It Fa ptr 49Pointer to the array of bytes to print. 50It does not need to be NULL-terminated. 51.It Fa length 52Number of bytes to print 53.It Fa hdr 54Pointer to a NULL-terminated character string that will be prepended to each 55line of output. 56A value of NULL implies that no header will be printed. 57.It Fa flags 58Flags for controlling the formatting of the output 59.Bl -tag -width HD_OMIT_COUNT 60.It Fa Bits 0-7 61Integer value of the number of bytes to display on each line. 62A value of 0 implies that the default value of 16 will be used. 63.It Fa Bits 8-15 64Character ASCII value to use as the separator for the hexadecimal output. 65A value of 0 implies that the default value of 32 (ASCII space) will be used. 66.It Fa HD_OMIT_COUNT 67Don't print the offset column at the beginning of each line 68.It Fa HD_OMIT_HEX 69Don't print the hexadecimal values on each line. 70.It Fa HD_OMIT_CHARS 71Don't print the character values on each line. 72.El 73.El 74.Pp 75.Sh SEE ALSO 76.Xr ascii 7 77.Sh AUTHORS 78This man page was written by 79.An Scott Long . 80