I wants to delete the below folder every time only on each view bulk operations but currently it is getting deleted for each node selected in VBO. I am executing this action in rules module.
Please let men know how to run this only once for each VBO.
$pdfdir = "/var/www/websites/test/sites/default/files/pdffolder";
$directory = escapeshellarg($pdfdir);
shell_exec("rm -rf $directory");
This code is executed via the Rules module.