I am opening a file and counting pattern matches. Is this the most efficient way to do it? 
open(DATA, "$errlog") || die "Can not open: $!\n";
my @dat = (<DATA>);
close(DATA);
open(DATA, ">>$errlog") || die "NO GO: $!\n";
                                     
foreach (@dat)
{
    if($_ =~ /patternmatchinghere/gi)
    {
        $counter++;
    }
}
close(DATA);

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In reply to Opening file and checking for data by Anonymous Monk

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