in reply to packing hex
You will want to take a look at the pack and unpack functions and the corresponding tutorial, Pack/Unpack Tutorial (aka How the System Stores Data), on this site - Another example of pack/unpack usage can also be seen in my signature.
- rob@development:/home/rob$ perl -e '$str = pack("H*", "9b23b4b322b0da7 +0")'
perl -le "print+unpack'N',pack'B32','00000000000000000000001010100101'"
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In Section
Seekers of Perl Wisdom