westy032001:

If you use moritz' solution, be sure to examine how you're using your hash. If you find yourself breaking up your current key on the '_' character later on, you might find it better to go ahead and have another key level or two, like:

my ($server,$attribute) = ('jwesvsf7', 'CPU_USER');
$hash{$attribute}{$server}{key} = "value";
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...roboticus