Cron作业 - 递归替换文件实例与主文件（timthumb漏洞防护）

I'm trying to figure out a cron job which will copy a file (timthumb.php) from the root of ftp (above our public_html directory) and recursively replace all existing instances of the file throughout the FTP. I'm also open to other ideas if someone has another method for doing this.I'm trying to figure out a cron job which will