The poster didn't ask for 'hex to octal', but wanted an "octet string" of a given format.

Once upon a time, a 'byte' wasn't necessarily eight bits It could be 4. ASCII was defined when it was often 7 bits per byte. The word 'octet' is used to refer to an eight bit entity, regardless of the byte size, word size, bus size, stop or parity scheme, or other implementation details.

The poster could/should look at the unpack function (perldoc -f unpack) for some ideas. It can be done with a simple string manipulation but it's more flexible if you unpack to four octets, then format it again (with sprintf "%x" or any other method).

--
[ e d @ h a l l e y . c c ]

In reply to Re: Re: Hex to Octet by halley
in thread Hex to Octet by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.