摘要： 转自：http://linux-tutorial.info/modules.php?name=MContent&pageid=94做了少许加粗和删减，需要完整版的请看原文。Major and Minor NumbersOne of the basic features of the Linux kernel is that it abstracts the handling of devices. All hardware devices look like regular files; they can be opened, closed, read and written usin 阅读全文