perl -e 'for $c (sort {$a<=>$b} map(/.(\d+)$/, <*[0-9]>)){ ++$n == $c || print map("$_\n", $n...$c-1) ; $n=$c }'
Ah, that's getting closer to the line noise effect I was looking for, thanks ;=)
Time to read up on that map command and why <> is globbing filenames in the current dir.
I'm almost pleased to see there's no offered improvement to the basic idea.
There's no way to get rid of that 'for' iterator, or the 'print'? -lane ? Any shorthand for sort {$a<=>$b}? Just wondering.
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