How will that sort "4321K" vs "2M"? Sorting by normalized value would be my preference. 

sub val {
    m/([\d.]*)([BKMGTEPZY]?)/ and $1 * $scale{$2}
}
... sort { val($a) <=> val($b) } ...

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In reply to Re^2: sort file with your own logic by Anonymous Monk
in thread sort file with your own logic by citi2015

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