od is as specified in the Single UNIX Specification but with differences as listed below.
outputs BYTES bytes per output line.
accepts arguments in pre-POSIX form.
The LSB supports option intermixtures with the following pre-POSIX specifications:
is equivalent to -t a, selects named characters.
is equivalent to -t fF, selects floats.
is equivalent to -t x2, selects hexadecimal shorts.
is equivalent to -t d2, selects decimal shorts.
is equivalent to -t d4, selects decimal longs.
The behaviors specified in this section are expected to disappear from a future version of the LSB; applications should only use the non-LSB-deprecated behaviors.
displays this help and exits.
outputs version information and exits.