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;
}
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.
Mabuhay Civil Engineers! :D