I"ve written the code for the above, but i'm stuck at a point to replace the line the result file with the line i want. Please help. Below is my code:

 my $ldir = "/Android";
    $RESULTS_FILE = $ldir.'/'.'results.html';
    open OUT, ">>", $RESULTS_FILE;
    open(IN,"<logcat.txt");

    while(<IN>)
    {
            chomp;
            if( $_ =~ m/Unable to parse/ )
            {
                    my @string = split('/',$_);
                    print @string;
                    my $stream_name = $string[4];
                    while $srch(<OUT>)
                    {
                            chomp;
                            if( $srch =~ m/$stream_name/ )
                            {
                                  // How to replace the line here?
                            }
                    }
            }
    }
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