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HEXDUMP\ Hexadecimal file dump {#hexdump-hexadecimal-file-dump align=”center”} =====================

HEXDUMP is a C++ program which prints the contents of a file, byte by byte, in hexadecimal format.

This sort of information can be useful when determining the format of a file, checking for byte-swapping, or other common tasks.

On many computer systems, there’s already a program called hexdump, so you have to be careful that you know which program you are running! You can type

which hexdump

to see where the system is going to go if you issue the command. If you don’t like what this tells you, you can either invoke the command with path information, or you can rename it, to say “my_hexdump”.

Thanks to John McCabe of Rutgers for pointing out and correcting a bug which occurred on some machines if the byte value 0xFF was encountered, 30 January 2008.

Usage: {#usage align=”center”}

hexdump filename: reads filename and writes a hexadecimal dump to the standard output.

Sample Output: {#sample-output align=”center”}

        HEXDUMP: Hexadecimal dump of file: box.3ds.

           Address                   Hexadecimal values                  Printable
        -----  -----------------------------------------------  ----------------

            0  4d 4d 53 02 00 00 02 00 0a 00 00 00 03 00 00 00  MMS.............
           16  3d 3d 68 01 00 00 3e 3d 0a 00 00 00 03 00 00 00  ==h...>=........
           32  00 01 0a 00 00 00 00 00 80 3f 00 40 4e 01 00 00  .........?.@N...
           48  42 6f 78 30 31 00 00 41 42 01 00 00 10 41 68 00  Box01..AB....Ah.
           ...

Languages: {#languages align=”center”}

HEXDUMP is available in a C++ version.

Reference: {#reference align=”center”}

Howard Burdick,\ Digital Imaging: Theory and Applications,\ McGraw Hill, 1997,\ ISBN: 0079130593,\ LC: TA1637.B87.

Source Code: {#source-code align=”center”}

hexdump.cpp, the source code;

Examples and Tests: {#examples-and-tests align=”center”}

text.txt, a file;
text.hex, the hexadecimal dump file, created by typing
```
            hexdump text.txt > text.hex
```

List of Routines: {#list-of-routines align=”center”}

MAIN is the main program for HEXDUMP.
HANDLE creates a hexdump for a single file.
TIMESTAMP prints the current YMDHMS date as a time stamp.

You can go up one level to the C++ source codes.

Last revised on 31 August 2005.