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OD(1)			   OpenBSD Reference Manual			 OD(1)

NAME
     od - octal, decimal, hex, ascii dump

SYNOPSIS
     od [-aBbcDdeFfHhIiLlOovXx] [-A base] [-j offset] [-N length]
	[-t type_string] [[+]offset[.][Bb]] [file ...]

DESCRIPTION
     od has been deprecated in favor of hexdump(1).

     hexdump(1), if called as od, provides compatibility for the options
     described below.  It does not provide compatibility for the -s option
     (see strings(1)) or the -P, -p, or -w options, nor is compatibility
     provided for the ``label'' component of the offset syntax.

     The options are as follows:

     -A base	 Specify the input address base.  The argument base may be one
		 of d, o, x, or n, which specify decimal, octal, hexadecimal
		 addresses or no address, respectively.

     -a		 One-byte character display.  Display the input offset in
		 octal, followed by sixteen space-separated, three column,
		 space-filled, characters of input data per line.  Control
		 characters are printed as their names instead of as C-style
		 escapes.

     -B		 Same as -o.

     -b		 One-byte octal display.  Display the input offset in octal,
		 followed by sixteen space-separated, three column, zero-
		 filled, bytes of input data, in octal, per line.  This is the
		 default output style if no other is selected.

     -c		 One-byte character display.  Display the input offset in
		 octal, followed by sixteen space-separated, three column,
		 space-filled, characters of input data per line.  Control
		 characters are printed as c style escapes, or as three octal
		 digits, if no c escape exists for the character.

     -D		 Four-byte octal display.  Display the input offset in octal,
		 followed by four space-separated, ten column, space filled,
		 four-byte units of input data, in octal, per line.

     -d		 Two-byte decimal display.  Display the input offset in octal,
		 followed by eight space-separated, five column, zero-filled,
		 two-byte units of input data, in unsigned decimal, per line.

     -e		 Eight-byte floating point display.  Display the input offset
		 in octal, followed by two space-separated, twenty-one column,
		 space filled, eight-byte units of input data, in floating
		 point, per line.

     -F		 Same as -e.

     -f		 Four-byte floating point display.  Display the input offset
		 in octal, followed by four space-separated, 14 column, space
		 filled, four-byte units of input data, in floating point, per
		 line.

     -H		 Four-byte hex display.	 Display the input offset in octal,
		 followed by four space-separated, eight column, zero filled,
		 four-byte units of input data, in hex, per line.

     -h		 Two-byte hex display.	Display the input offset in octal,
		 followed by eight space-separated, four column, zero filled,
		 two-byte units of input data, in hex, per line.

     -I		 Four-byte decimal display.  Display the input offset in
		 octal, followed by four space-separated, eleven column, space
		 filled, four-byte units of input data, in decimal, per line.

     -i		 Two-byte decimal display.  Display the input offset in octal,
		 followed by eight space-separated, six column, space filled,
		 two-byte units of input data, in decimal, per line.

     -j offset	 Skip offset bytes from the beginning of the input.  By
		 default, offset is interpreted as a decimal number.  With a
		 leading 0x or 0X, offset is interpreted as a hexadecimal
		 number, otherwise, with a leading 0, offset is interpreted as
		 an octal number.  Appending the character b, k, or m to
		 offset causes it to be interpreted as a multiple of 512,
		 1024, or 1048576, respectively.

     -L		 Same as -I.

     -l		 Same as -I.

     -N length	 Interpret only length bytes of input.

     -O		 Four-byte octal display.  Display the input offset in octal,
		 followed by four space-separated, eleven column, zero-filled,
		 four-byte units of input data, in octal, per line.

     -o		 Two-byte octal display.  Display the input offset in octal,
		 followed by eight space-separated, six column, zero-filled,
		 two-byte units of input data, in octal, per line.

     -t type_string
		 Specify one or more output types.  The type_string option-
		 argument must be a string specifying the types to be used
		 when writing the input data.  The string must consist of the
		 type specification characters:

		 a selects US-ASCII output, with control characters replaced
		 with their names instead of as c escape sequences.  See also
		 the _u conversion provided by hexdump(1).

		 c selects a standard character based conversion.  See also
		 the _c conversion provided by hexdump(1).

		 f selects the floating point output format.  This type
		 character can be optionally followed by the characters 4 or F
		 to specify four-byte floating point output, or 8 or L to
		 specify eight-byte floating point output.  The default output
		 format is eight-byte floats.  See also the e conversion
		 provided by hexdump(1).

		 d, o, u, or x select decimal, octal, unsigned decimal, or hex
		 output respectively.  These types can optionally be followed
		 by C to specify char-sized output, S to specify short-sized
		 output, I to specify int-sized output, L to specify
		 long-sized output, 1 to specify one-byte output, 2 to specify
		 two-byte output, 4 to specify four-byte output, or 8 to
		 specify eight-byte output.  The default output format is in
		 four-byte quantities.	See also the d, o, u, and x
		 conversions provided by hexdump(1).

     -v		 The -v option causes od to display all input data.  Without
		 the -v option, any number of groups of output lines, which
		 would be identical to the immediately preceding group of
		 output lines (except for the input offsets), are replaced
		 with a line comprised of a single asterisk.

     -X		 Same as -H.

     -x		 Same as -h.

     For each input file, od sequentially copies the input to standard output,
     transforming the data according to the options given.  If no options are
     specified, the default display is equivalent to specifying the -o option.

EXIT STATUS
     The od utility exits 0 on success, and >0 if an error occurs.

SEE ALSO
     hexdump(1), strings(1)

HISTORY
     The od utility is compliant with the IEEE Std 1003.1-2008 (``POSIX'')
     specification.

     The flags [-aBDeFfHhIiLlOX] are extensions to that specification.

     A od command appears in Version 1 AT&T UNIX.

     This man page was written in February 2001 by Andrew Brown, shortly after
     he augmented the deprecated od syntax to include things he felt had been
     missing for a long time.

OpenBSD 4.9			October 7, 2010			   OpenBSD 4.9
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