od(1) - f38

1OD(1)                            User Commands                           OD(1)
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NAME

6       od - dump files in octal and other formats
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SYNOPSIS

9       od [OPTION]... [FILE]...
10       od [-abcdfilosx]... [FILE] [[+]OFFSET[.][b]]
11       od --traditional [OPTION]... [FILE] [[+]OFFSET[.][b] [+][LABEL][.][b]]
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DESCRIPTION

14       Write an unambiguous representation, octal bytes by default, of FILE to
15       standard output.  With more than one FILE argument, concatenate them in
16       the listed order to form the input.
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18       With no FILE, or when FILE is -, read standard input.
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20       If  first  and second call formats both apply, the second format is as‐
21       sumed if the last operand begins with + or (if there are 2 operands)  a
22       digit.  An OFFSET operand means -j OFFSET.  LABEL is the pseudo-address
23       at first byte printed, incremented when dump is progressing.  For  OFF‐
24       SET and LABEL, a 0x or 0X prefix indicates hexadecimal; suffixes may be
25       . for octal and b for multiply by 512.
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27       Mandatory arguments to long options are  mandatory  for  short  options
28       too.
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30       -A, --address-radix=RADIX
31              output format for file offsets; RADIX is one of [doxn], for Dec‐
32              imal, Octal, Hex or None
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34       --endian={big|little}
35              swap input bytes according the specified order
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37       -j, --skip-bytes=BYTES
38              skip BYTES input bytes first
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40       -N, --read-bytes=BYTES
41              limit dump to BYTES input bytes
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43       -S BYTES, --strings[=BYTES]
44              output strings of at least BYTES graphic  chars;  3  is  implied
45              when BYTES is not specified
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47       -t, --format=TYPE
48              select output format or formats
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50       -v, --output-duplicates
51              do not use * to mark line suppression
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53       -w[BYTES], --width[=BYTES]
54              output  BYTES bytes per output line; 32 is implied when BYTES is
55              not specified
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57       --traditional
58              accept arguments in third form above
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60       --help display this help and exit
61
62       --version
63              output version information and exit
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65   Traditional format specifications may be intermixed; they accumulate:
66       -a     same as -t a,  select named characters, ignoring high-order bit
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68       -b     same as -t o1, select octal bytes
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70       -c     same as -t c,  select printable characters or backslash escapes
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72       -d     same as -t u2, select unsigned decimal 2-byte units
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74       -f     same as -t fF, select floats
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76       -i     same as -t dI, select decimal ints
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78       -l     same as -t dL, select decimal longs
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80       -o     same as -t o2, select octal 2-byte units
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82       -s     same as -t d2, select decimal 2-byte units
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84       -x     same as -t x2, select hexadecimal 2-byte units
85
86   TYPE is made up of one or more of these specifications:
87       a      named character, ignoring high-order bit
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89       c      printable character or backslash escape
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91       d[SIZE]
92              signed decimal, SIZE bytes per integer
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94       f[SIZE]
95              floating point, SIZE bytes per float
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97       o[SIZE]
98              octal, SIZE bytes per integer
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100       u[SIZE]
101              unsigned decimal, SIZE bytes per integer
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103       x[SIZE]
104              hexadecimal, SIZE bytes per integer
105
106       SIZE is a number.   For  TYPE  in  [doux],  SIZE  may  also  be  C  for
107       sizeof(char),   S  for  sizeof(short),  I  for  sizeof(int)  or  L  for
108       sizeof(long).  If TYPE is f, SIZE may also be F  for  sizeof(float),  D
109       for sizeof(double) or L for sizeof(long double).
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111       Adding  a z suffix to any type displays printable characters at the end
112       of each output line.
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114   BYTES is hex with 0x or 0X prefix, and may have a multiplier suffix:
115       b      512
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117       KB     1000
118
119       K      1024
120
121       MB     1000*1000
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123       M      1024*1024
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125       and so on for G, T, P, E, Z, Y.  Binary  prefixes  can  be  used,  too:
126       KiB=K, MiB=M, and so on.
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EXAMPLES

129       od -A x -t x1z -v
130              Display hexdump format output
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132       od -A o -t oS -w16
133              The default output format used by od
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AUTHOR

136       Written by Jim Meyering.
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REPORTING BUGS

139       GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
140       Report any translation bugs to <https://translationproject.org/team/>
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COPYRIGHT

143       Copyright  ©  2022  Free Software Foundation, Inc.  License GPLv3+: GNU
144       GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
145       This is free software: you are free  to  change  and  redistribute  it.
146       There is NO WARRANTY, to the extent permitted by law.
147