if (@ARGV > 0) {
                if ( $ARGV[0] eq "-c") {
                    if (  ! -e "$ARGV[1]" ) {
                        print "Provided xml file doesnot exists\n";
                        }
                    elsif ( -f "$ARGV[1]") {
                        $controlfile = $ARGV[1];
                        parse_xml();
                        update_exports();
                        }
                    }
        else { #...