Here's one solution to convert this octet string. If there is only one value
between the dots you need to add a Zero.

$string =
"21.A.21.20.4C.61.73.74.20.63.6F.6E.66.69.67.75.72.61.74.69.6F.6E.20.63.68.61.6E.67.65.20.61.74.20.31.30.3A.34.30.3A.32.30
.20.44.65.75.74.73.63.68.20.54.75.65.20.53.65.70.20.31.35.20.32.30.30.39.20.62.79.20.66.30.37.39.61.64.6D.69.6E.A.21";
$string =~ s/\.A\./\.0A\./g;
$string =~ s/\.//g;
$string =~ s/([a-fA-F0-9][a-fA-F0-9])/chr(hex($1))/eg;
print "$string\n";

produces :
!
! Last configuration change at 10:40:20 Deutsch Tue Sep 15 2009 by f079admin
!


On Tue, Sep 15, 2009 at 9:38 AM, Christian Fieres <[email protected]>wrote:

>
> Hi again,
>
> I've come across a quick and dirty solution: I have all ".A." expressions
> in my > 4000 character octet string sed-substituted by a "#" or anything,
> which allows for tr to replace this (single character) pattern with a
> newline "\n" before I run through a for loop to have each line converted to
> ascii using the script shown below.
>
> Nevertheless, if anyone knows an elegant solution to have an octet string
> like
>
>
> 21.A.21.20.4C.61.73.74.20.63.6F.6E.66.69.67.75.72.61.74.69.6F.6E.20.63.68.61.6E.67.65.20.61.74.20.31.30.3A.34.30.3A.32.30.20.44.65.75.74.73.63.68.20.54.75.65.20.53.65.70.20.31.35.20.32.30.30.39.20.62.79.20.66.30.37.39.61.64.6D.69.6E.A.21
>
> converted to
>
> !
> ! Last configuration change at 10:40:20 Deutsch Tue Sep 15 2009 by
> f079admin
> !
>
> - let me know, I'm sure I am not the only one new to this kind of
> conversions. Maybe you are also interested to share your knowledge on the
> Wiki at dachsug.ch?
>
> Freundliche Grüße / Best regards
>
> Christian Fieres
>
> Mainova AG
> Planung und Betrieb Infrastruktur (M3-ON2)
> Service Operation Center
> Solmsstraße 38
> 60623 Frankfurt
>
> Telefon / Phone (069) 2 13-2 36 17
> Mobil / Mobile (0170) 5 60 15 63
> Telefax / Facsimile (069) 2 13-9 62 36 17
> E-Mail [email protected]
>
>
> Mainova Aktiengesellschaft - Solmsstraße 38 - D-60623 Frankfurt am Main
> Vorsitzende des Aufsichtsrates: Oberbürgermeisterin Dr. h. c. Petra Roth -
> Vorstand: Dr. Constantin H. Alsheimer (Vorsitzender), Lothar Herbst, Joachim
> Zientek
> Sitz der Aktiengesellschaft: Frankfurt am Main - Amtsgericht Frankfurt HRB
> 7173 - USt-ID-Nr. DE 114184034
>
>
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> ----- Weitergeleitet von Christian Fieres/M3-ON/MAINOVA/DE am 15.09.2009
> 15:33 -----
>  *Christian Fieres <[email protected]>*
>
> 15.09.2009 15:16
>  Bitte antworten an
> Christian Fieres <[email protected]>
>
>   An
> "spectrum" <[email protected]>  Kopie
>   Thema
> [spectrum] Octet string conversion
>
>
>
>
>
> Hi all,
>
> probably an easy one, but as a totally newbie to e.g. Perl or C, I do not
> really understand what the simple octetstring 2 ascii perl script someone
> gave me a few years ago that is intended to convert an octet string to an
> ascii text does:
>
> printf "%s\n",pack "H2" x scalar(split /\./,  $ARGV[0]), split /\./,
>  $ARGV[0];
>
> What it does is clear - but not how it does it. So I am not able to convert
> such things as whole NCM configuration files given as an attribute's value
> in octet string format. (I'm on Solaris.) It contains ASCII #10 characters
> which are obviously ignored by the perl line above, so what I get is a
> one-line-string with concatenated lines.
>
> I'm sure the solution is clear, but I simply can't grab it. What I also did
> was try to replace all ".A." in my one line octet string by a newline, but
> didn't succeed with awk and sed, and my tr knowledge is rather non-existant,
> so a simple
>
> tr ".A." "\n"
>
> to have single lines to feed my perl script with doesn't do the job either.
>
> Whoever knows what I mean: please enlighten me! :) Thanks a lot.
>
> Freundliche Grüße / Best regards
>
> Christian Fieres
>
> Mainova AG
> Planung und Betrieb Infrastruktur (M3-ON2)
> Service Operation Center
> Solmsstraße 38
> 60623 Frankfurt
>
> Telefon / Phone (069) 2 13-2 36 17
> Mobil / Mobile (0170) 5 60 15 63
> Telefax / Facsimile (069) 2 13-9 62 36 17
> E-Mail [email protected]
>
>
> Mainova Aktiengesellschaft - Solmsstraße 38 - D-60623 Frankfurt am Main
> Vorsitzende des Aufsichtsrates: Oberbürgermeisterin Dr. h. c. Petra Roth -
> Vorstand: Dr. Constantin H. Alsheimer (Vorsitzender), Lothar Herbst, Joachim
> Zientek
> Sitz der Aktiengesellschaft: Frankfurt am Main - Amtsgericht Frankfurt HRB
> 7173 - USt-ID-Nr. DE 114184034
>
>
> Müssen Sie diese E-Mail wirklich ausdrucken? - fragt der Mainova
> Energiecoach.
> Mehr Tipps und Antworten zum Thema Energieeffizienz unter
> http://www.mainova-energiecoach.de
>
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