OD

od ? dump files in octal and other formats

od [OPTION]... [FILE]...
od --traditional [FILE] [[+]OFFSET [[+]LABEL]]

Write an unambiguous representation, octal bytes by default, of FILE to standard output. With no FILE, or when FILE is -, read standard input.

?A, ??address?radix=RADIX

decide how file offsets are printed

?j, ??skip?bytes=BYTES

skip BYTES input bytes first on each file

?N, ??read?bytes=BYTES

limit dump to BYTES input bytes per file

?s, ??strings[=BYTES]

output strings of at least BYTES graphic chars

?t, ??format=TYPE

select output format or formats

?v, ??output?duplicates

do not use * to mark line suppression

?w, ??width[=BYTES]

output BYTES bytes per output line

??traditional

accept arguments in pre-POSIX form

??help

display this help and exit

??version

output version information and exit

Pre-POSIX format specifications may be intermixed, they accumulate:

?a

same as ?t a, select named characters

?b

same as ?t oC, select octal bytes

?c

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

?d

same as ?t u2, select unsigned decimal shorts

?f

same as ?t fF, select floats

?h

same as ?t x2, select hexadecimal shorts

?i

same as ?t d2, select decimal shorts

?l

same as ?t d4, select decimal longs

?o

same as ?t o2, select octal shorts

?x

same as ?t x2, select hexadecimal shorts

For older syntax (second call format), OFFSET 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 maybe . for octal and b multiply by 512.

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

a

named character

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, it is multiplied by 512 with b suffix, by 1024 with k and by 1048576 with m. Adding a z suffix to any type adds a display of printable characters to the end of each line of output. ?s without a number implies 3. ?w without a number implies 32. By default, od uses ?A o ?t d2 ?w 16.

Written by Jim Meyering.

Report bugs to <bug-textutils@gnu.org>.

Copyright © 1999 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

The full documentation for od is maintained as a Texinfo manual. If the info and od programs are properly installed at your site, the command

info od

should give you access to the complete manual.