please watch my code ....(it is working )
to create a file name with extensison. 
#!/usr/bin/perl
print "Content-type:text/html\n\n";

read(STDIN, $buffer, $ENV{'CONTENT_LENGTH'});
@pairs = split(/&/, $buffer);
foreach $pair (@pairs) {
    ($name, $value) = split(/=/, $pair);
    $value =~ tr/+/ /;
    $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C", hex($1))/eg;
    $FORM{$name} = $value;
}

$date=$FORM{'date'};

$bar=".txt";
$date=$date . " " . $bar;

$dates=$FORM{'date'};


open(INF,"$date") or dienice("Ej ....datum! $date: $! \n");

[download]
As you see my code expects a variable to create a file . understandable i guess !!

in this case , when the user presses a java calender and
chosses a date , the date will be used as afile name
with a file extension , such as db or .txt .
the problem is the file is not loading with extension.
but loads without extension.
this means the file will be in binary format.
how can i tackle this oproblem ??

update (broquaint): added <code> tags

In reply to File extension -- by mikael-g

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