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Unless I've mis-interpreted it, having done the hard work as posited by toolic, the problem is now down to the printed representation - maybe this, or something not unlike it, is more along the lines of what you're seeking...
use warnings; use strict; use Data::Dumper; my %Diag; while (<DATA>) { my ($name, $val) = split; push @{ $Diag{$name} }, $val; } print "$_ => " . join(' ', @{$Diag{$_}}) . "\n" for keys %Diag; __DATA__ Name1 1234 Name2 9999 Name1 5514 Name3 5415 Name2 6419

A user level that continues to overstate my experience :-))

In reply to Re^3: Hashes of arrays populated from a Text File by Bloodnok
in thread Hashes of arrays populated from a Text File by Raya4505

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