z/OS V1R9.0 UNIX System Services Command ... - Christian Grothoff

|
|
|
|
|
|
|
|
|
|
|
|
|
|
od
Options
of options to generate multiple formats with the requested representation of each
byte vertically aligned. The file seek address (in octal) precedes each line of new
data.
od recognizes two syntaxes. The first one conforms to POSIX. If you choose the
first form, od displays files from the list file one at a time. If no file appears on the
command line, od reads the standard input.
For a summary of the UNIX03 changes to this command, see Appendix N, “UNIX
shell commands changed for UNIX03,” on page 943.
The first form of od accepts the following options:
–v Displays all lines. Normally, od does not display multiple lines that differ
only in the address. It displays the first line with a single * under it. to show
that any subsequent lines are the same.
–A addr_fmt
Specifies the format that od uses to display the address field. addr_fmt can
be d (decimal), o (octal), x (hexadecimal), or n (do not display address).
The default is –A o.
–j num
Skips num bytes from the beginning of the file. If you precede num with 0X
or 0x, od interprets it as hexadecimal. If you precede it with 0, od interprets
it as octal; otherwise, od assumes it is decimal. You can also append b, k,
or m to num to indicate 512-byte blocks, kilobytes, or megabytes instead of
bytes. If num is hexadecimal, any appended b will be considered to be the
final hexadecimal digit rather than 512-byte block.
Be careful with this option when working with doublebyte characters. If byte
num+1 (the starting byte, after skipping num bytes) is not the first byte of a
character, od proceeds as though it is, resulting in a misinterpretation of
that and subsequent characters. This misinterpretation continues until od
encounters a . Then it is once again synchronized with the first
byte of a doublebyte character.
–N num
Processes a maximum of num bytes. Be careful with this option when
working with doublebyte characters. If od is processing a doublebyte
character when it encounters the numth byte and this byte is not the last
byte of the character, od displays ??? instead of the character.
–t type_string
Specifies the output format. type_string can contain the following format
characters:
460 z/OS V1R9.0 UNIX System Services Command Reference
a Named characters from the ISO 646 character set. Data is
interpreted as if it was coded in the ISO 646 character set.
c Characters. od displays nonprintable characters as backslash
sequences and displays printable doublebyte characters properly.
A printable doublebyte character is displayed in the first byte
position, and the remaining positions to the end of the character
display ** to indicate the doublebyte character. Nonprintable
doublebyte characters are displayed using a 3-digit octal number to
represent each byte.