Hi, Could some one please explain me the differences and similarities between fcntl and ioctl? Is one built upon the other? AFAIK, both are used for handling of very device specific commands by the driver. Thanks, Rick - To unsubscribe from this list: send the line "unsubscribe linux-newbie" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.linux-learn.org/faqs