Mine

#!/usr/bin/perl
use LWP::Simple qw($ua get);
$ua = LWP::UserAgent->new;
$ua->agent('Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.3) Gecko/20070309 Firefox/2.0.0.9');
&rficheck("rfis.txt");
sub rficheck($){
	$resultfile = $_[0];
  		open(rfis,"<$resultfile\n") || die "Couldn't open $resultfile\n";
while(<rfis>){
my $line = $_;
chomp($line);
print "[-] Checking $line\n";
$response = $ua->get($line);
if($response->is_success){
	if($response->content =~ m/(.*?)safe(.*?)/i){
  		open(LOG,">>$resultfile" . "-found.txt") || die "Couldn't open $resultfile" . "-found\n";
			print LOG "$line\n";
			close(LOG);
}
}
}
}