Hi! I tried to extract messages from the etc/mtab. Here's what I did, its very simple. I'm just beggining to learn RegEx, please bear with me hehe..

sub scan_cddvd {
    # mtab file /etc/mtab
    # cd/dvd signature /dev/sr0
    open(MYINPUTFILE, "</etc/mtab");
    my $cddvd_path = 'not found';
    while(<MYINPUTFILE>){
        my($line) = $_;
        chomp($line);
        if($line =~ m/^\/dev\/sr/){
            print "FOUND CD/DVD\n";
            print $line , "\n";
            #$line =~ /(\/media\/.*)\ /;
            $line =~ /(\/media\/\S+)\s+/;
            my $newline = $1;
            print $newline , "\n";
            while($newline =~ m/\\040/){
                $newline =~ s/\\040/ /;
            }
            print $newline , "\n";
            $cddvd_path = $newline
        }              
    }
    close MYINPUTFILE;
    return $cddvd_path;
}
[download]

I made a timer of some sort and calls this function to determine if a CD / DVD is inside the drive.works pretty ok. :D hehe. I would be applying the same concept with usb flash drives. Instead of looking for /dev/sr, I'd be looking for /dev/sdb hehe.hope it would work just fine.

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