The following will do what you want. Just change the call to printspaced() so it passes whatever delimiter you want as the first argument.
use strict;
use warnings;
chomp (my @data = <DATA>);
$_ = [split / /] for @data;
printspaced(' ', \@data);
sub printspaced {
my ($s, $d, @f, $f) = @_;
push @f, '%-'.$_.'s' for widths($d);
$f = join($s, @f)."\n";
printf($f, @$_) for @$d;
}
sub widths {
my ($d, @r, $i) = $_[0];
for (@$d) {
no warnings;
for ($i = 0; $i <= $#$_; $i++) {
$r[$i] = length($_->[$i]) if length($_->[$i]) > $r[$i];
}
}
return @r;
}
__DATA__
GAL_up800.fasta 6 800 4.8
hm01g.fasta 18 2008 36.144
hm02r.fasta 9 1000 9
train_muscle.fasta 7 50 0.35
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