od(1) (Directory and File Management Utilities) od(1)
NAME
od - octal dump
SYNOPSIS
od [ -bcDdFfOoSsvXx ] [ file ] [ [ + ]offset[ . | b ] ]
DESCRIPTION
od displays file in one or more formats, as selected by the first
argument. If the first argument is missing, -o is default. If no
file is specified, the standard input is used. For the purposes of
this description, "word" refers to a 16-bit unit, independent of the
word size of the machine; "long word" refers to a 32-bit unit, and
"double long word" refers to a 64-bit unit. The meanings of the
format options are:
-b Interpret bytes in octal.
-c Interpret bytes as single-byte characters. Certain non-graphic
characters appear as C-language escapes: null=\0,
backspace=\b, form-feed=\f, new-line=\n, return=\r, tab=\t;
others appear as 3-digit octal numbers. For example:
echo "hello world" | od -c
0000000 h e l l o w o r l d \n
0000014
-D Interpret long words in unsigned decimal.
-d Interpret words in unsigned decimal.
-F Interpret double long words in extended precision.
-f Interpret long words in floating point.
-O Interpret long words in unsigned octal.
-o Interpret words in octal.
-S Interpret long words in signed decimal.
-s Interpret words in signed decimal.
-v Show all data (verbose).
-X Interpret long words in hex.
-x Interpret words in hex.
offset specifies an offset from the beginning of file where the
display will begin. offset is normally interpreted as octal bytes.
If . is appended, offset is interpreted in decimal. If b is
appended, offset is interpreted in blocks of 512 bytes. If file is
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od(1) (Directory and File Management Utilities) od(1)
omitted, offset must be preceded by +.
The display continues until an end-of-file is reached.
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