Could you tell me why this code doesn't work then? I thought I had the right syntax. 
$file = 'electricity.txt';
open(INFO, $file);
@lines = <INFO>;
close(INFO);
$counter = 1;
foreach $line (@lines)
{
    if ($line =~ /$ARGV[0]/)
    {
        print "$counter ";
        $_ = $line;
        s/$ARGV[0]/($ARGV[0])/g;
        print $line;
        $counter++;
    }
    else
    {
        print $line;
    }
}

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In reply to Re^4: The $_ Special Variable by chuloon
in thread The $_ Special Variable by chuloon

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