HI, I need to write a code that will "monitor" file on the web and email me when someone modifies or replaces it. Here's what I had been trying so far:

use LWP::UserAgent;
use CGI qw(header -no_debug);
use Net::SMTP; 

#my $url = 'http://130.119.7.69/Autosubscriptions/URLsub/winzip.log';
my $url = 'https://myweb.server.com/URLsub/some.log';
my $res = LWP::UserAgent->new->request(HTTP::Request->new(HEAD => $url
+));
my $ServerName = "mySMTP.gateway.com"; 
my $file="modifiedtest.txt"; 

# print header;

 local $\ = "\n";
 if ($res->is_success) {
#   $res->previous &&
#   $res->previous->is_redirect and print 'redirected: ', $res->reques
+t->url;
   $res->last_modified and $modified = scalar(localtime($res->last_mod
+ified));
#   $res->content_length and print 'size: ', $res->content_length;
 } else {
   print $res->status_line;
 }

#read the file content
open FILE, $file or die "Couldn't open file: $!"; 
while (<FILE>){
 $string .= $_;
}
close FILE;


#open(DAT, $file) || die("Could not open file!");

#@data=<DAT>;

print "file data is $string";
print "web file data is $modified"; 

#check to see if we have latest info

if ($modified = $string) { print "the file is the same";

} else { print "proceeding - file is not the same...";

open(DAT,">$file") || die("Cannot Open File");
print DAT "$modified"; 
close(DAT);

$smtp = Net::SMTP->new($ServerName); 
die "Couldn't connect to server" unless $smtp;
my $MailFrom = "monitor\@netvision.net.il"; 
my $MailTo = "avishay\@mail.com"; 

$smtp->mail( $MailFrom ); 
$smtp->to( $MailTo ); 

# Start the mail 
$smtp->data(); 

# Send the header. 
$smtp->datasend("To: avishay\@mail.com\n"); 
$smtp->datasend("From: monitor\@netvision.net.il\n"); 
$smtp->datasend("Subject: There is new file out there!\n"); 
$smtp->datasend("\n"); 

# Send the message 
$smtp->datasend("New file (time stamped at $modified)\n\n"); 

# Send the termination string 
$smtp->dataend(); 
$smtp->quit(); 
}
[download]

Now, I can not seem to correctely compare between $modified and $string although both prints their values corretcely. What do I miss? Thanks, Sky

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