From: Ammar Ali <ammarabuali@...>
Date: 2010-12-27T20:58:52+09:00
Subject: Re: how to change it in to hex?

On Mon, Dec 27, 2010 at 1:32 PM, Pen Ttt <myocean135@yahoo.cn> wrote:
> ni my console,hexdump -C /home/pt/kc|less,what i get is :
>
> 00000000  00 00 00 00 56 b8 32 01  06 13 00 00 00 00 00 00
> 00000010  00 00 00 00 00 00 1f ab  ca 48 00 00 00 00 00 00
>
> irb(main):011:0> IO.read('/home/pt/kc', 8, 0x00)
> => "\000\000\000\000V\2702\001"
>
> how to make   "\000\000\000\000V\2702\001"  become  00 00 00 00 56 b8 32
> 01?

One way is to use String#unpack to get the individual bytes from the
data string, (C* for a sequence of unsigned chars), then use Array#map
to convert the values to hex, finally to format with spaces between
the octets, use Array#join.

Regards,
Ammar