You could load your data into a Perl data structure, such as a HASHES OF HASHES to get a count of all variables: 
$data{$system}{$variable}++

[download]

It's not clear to me what you want to do with your data elements. If you provide a small example of your actual input and expected output, then I can try to provide more of a concrete code sample.

In reply to Re: What is the best way to handle this data? by toolic
in thread What is the best way to handle this data? by terminaljunkie

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