Traditional format specifications may be intermixed; they accumulate:¶

-a

same as -t a, select named characters, ignoring high-order bit

-b

same as -t o1, select octal bytes

-c

same as -t c, select ASCII characters or backslash escapes

-d

same as -t u2, select unsigned decimal 2-byte units

-f

same as -t fF, select floats

-i

same as -t dI, select decimal ints

-l

same as -t dL, select decimal longs

-o

same as -t o2, select octal 2-byte units

-s

same as -t d2, select decimal 2-byte units

-x

same as -t x2, select hexadecimal 2-byte units

If first and second call formats both apply, the second format is assumed if the last operand begins with + or (if there are 2 operands) a digit. An OFFSET operand means -j OFFSET. LABEL is the pseudo-address at first byte printed, incremented when dump is progressing. For OFFSET and LABEL, a 0x or 0X prefix indicates hexadecimal; suffixes may be . for octal and b for multiply by 512.

TYPE is made up of one or more of these specifications:

a

named character, ignoring high-order bit

c

ASCII character or backslash escape

d[SIZE]

signed decimal, SIZE bytes per integer

f[SIZE]

floating point, SIZE bytes per integer

o[SIZE]

octal, SIZE bytes per integer

u[SIZE]

unsigned decimal, SIZE bytes per integer

x[SIZE]

hexadecimal, SIZE bytes per integer

SIZE is a number. For TYPE in doux, SIZE may also be C for sizeof(char), S for sizeof(short), I for sizeof(int) or L for sizeof(long). If TYPE is f, SIZE may also be F for sizeof(float), D for sizeof(double) or L for sizeof(long double).

RADIX is d for decimal, o for octal, x for hexadecimal or n for none. BYTES is hexadecimal with 0x or 0X prefix, and may have a multiplier suffix: b 512, kB 1000, K 1024, MB 1000*1000, M 1024*1024, GB 1000*1000*1000, G 1024*1024*1024, and so on for T, P, E, Z, Y. Adding a z suffix to any type displays printable characters at the end of each output line. Option --string without a number implies 3; option --width without a number implies 32. By default, od uses -A o -t oS -w16.