The variable in the foreach loop should also be properly declared, and preferably not called $a.

for my $pattern (@gen)
{
    my @result = grep/^\Q$pattern\E$/, @sea;
    push (@final , @result);
}

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In reply to Re^2: error message txtFile comparison with output in another txtfile by Fang
in thread error message txtFile comparison with output in another txtfile by juergenkemeter

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