hexdump3
Dump a block of bytes to standard out in hexadecimal form
Usage
#include <libutil.h>
void
hexdump(void *ptr, int length, const char *hdr, int flags);
Library
System Utilities Library (libutil, -lutil)
Overview
The hexdump() function prints an array of bytes to standard out in hexadecimal form, along with the ASCII representation of the bytes, if possible. By default, each line of output will start with an offset count, followed by 16 hexadecimal values, followed by 16 ASCII characters.
- ptr
-
Pointer to the array of bytes to print. It does not need to beNUL -terminated.
- length
-
Number of bytes to print.
- hdr
-
Pointer to aNUL -terminated character string that will be prepended to each line of output. A value of NULL implies that no header will be printed.
- flags
-
Flags for controlling the formatting of the output.
- Bits 0-7
-
Integer value of the number of bytes to display on each line. A value of 0 implies that the default value of 16 will be used.
- Bits 8-15
-
Character ASCII value to use as the separator for the hexadecimal output. A value of 0 implies that the default value of 32 (ASCII space) will be used.
- HD_OMIT_COUNT
-
Do not print the offset column at the beginning of each line.
- HD_OMIT_HEX
-
Do not print the hexadecimal values on each line.
- HD_OMIT_CHARS
-
Do not print the character values on each line.
Releases
39 releases since FreeBSD 8.0-RELEASE; the text changed 26 times.