Linux in a Nutshell, 6th Edition

Name

hexdump

Synopsis

hexdump [options] file

Display specified file or input in hexadecimal, octal, decimal, or ASCII format. Option flags are used to specify the display format.

Options

-b

Use a one-byte octal display; show the input offset in hexadecimal, followed by 16 three-column octal data bytes, filled with zeroes and separated by spaces.

-c

Use a one-byte character display; show the input offset in hexadecimal, followed by 16 three-column entries, filled with zeroes and separated by spaces.

-C

Canonical mode. Display hexadecimal offset, two sets of eight columns of hexadecimal bytes, then a | followed by the ASCII representation of those same bytes.

-d

Use a two-byte decimal display. The input offset is again in hexadecimal, but the display has only eight entries per line, of five columns each, containing two bytes of unsigned decimal format.

-e format_string

Choose a format string to be used to transform the output data. Format strings consist of:

Iteration count

The iteration count is optional. It determines the number of times to use the transformation string. The number is followed by a slash (/) to distinguish it from the byte count.

Byte count

The number of bytes to be interpreted by the conversion string, preceded by a slash character to distinguish it from the iteration count. The byte count is optional.

Format characters

The actual format characters are required. They are surrounded by quotation marks and are interpreted as fprintf (see printf) formatting strings, although the *, ...