##
my $dir = '.';
opendir(my $dh, $dir) or die "Could not open $dir because $!\n;
@list = readdir($dh);
closedir($dh);
####
@list = glob($dir .'/A*');
####
my $dir = '.';
opendir(my $dh, $dir) or die "Could not open $dir because $!\n;
while(readdir($dh)){
# do stuff to $_
}
closedir($dh);