Works like a charm once the last compare was changed to 
$a->[3] cmp $b->[3]

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1. Is there a way to delineate the end of data block, something line __ENDOFDATA__ ( if it exists ) ?

2. I was thinking more in terms of packing or caching the sort keys, but now I really don't think that's necessary. The file only contains about 400 lines.

Thanks for your assistance.

In reply to Re^2: Sort questions by wube
in thread Sort questions by wube

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