Why, whats wrong with htdigest? Fianlly i did this and it worked! 
use Digest::MD5;
...
...
#***********CHECK IF USER ALREADY EXISTS & ITS NOT AN AUTOMATED SCRIPT
+**********
$select = $dbh->prepare( "SELECT username, date FROM users WHERE usern
+ame = ? AND date > DATE_SUB(NOW(), INTERVAL 5 MINUTE)" );
$select->execute( $username );

if ( $select->rows ) {
        print h1( {class=>'cyan'}, "Αυτός &#9
+59; Χρήστης υπά&#96
+1;χει ήδη! Διάλ&#94
+9;ξε άλλο όνομ&#945
+; χρήστη!" );
        exit 0;
}


#***********ADD NEW USER TO THE DIGEST PASSWORD FILE & TO THE DATABASE
+**********
my $user  = $username;
my $realm = "You Must Be Registered In Order To Post!";
my $pass  = $password;

open(FILE, ">>/path/to/password/file") or die $!;
     print FILE "$user:$realm:" . Digest::MD5::md5_hex("$user:$realm:$
+pass") . "\n";
close(FILE);

$select = $dbh->prepare( "INSERT INTO users (username, password, email
+, date, host) VALUES (?, ?, ?, ?, ?)" );
$select->execute( $username, $password, $email, $date, $host);

[download]
Isnt that approach an ok option to use?

ps. Is it safe to keep the password file inside the www directory or put it outside the webroot better?!

In reply to Passing values to htdigest from command line problem by Nik

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