sleep is often implemented by alarm, not by counting down. You can implement your own sleep that would count down, though. The naive implementation might be a bit imprecise: 
sub mysleep {
    my $seconds = shift;
    while ($seconds) {
        print $seconds--, "\n";
        sleep 1;
    }
}
mysleep(5);

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In reply to Re: Sleep function by choroba
in thread Sleep function by programmercarlito

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