> open my $incolumns, '|-', 'column -t' or die;

https://www.man7.org/linux/man-pages//man1/column.1.html

Oh ... you are a sinner against the Perl dogma! :(

"Do not needlessly shell out" says the lord and format is his prophet.

No dessert after meal for one week! ;-)

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery

In reply to Re^6: Group by from array by LanX
in thread Group by from array by sroux

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