驱动如何区分出次设备号。 read/write接口函数要能够获得字符设备结构体变量地址。 什么是文件描述符？ Linux 中一切都可以看作文件，包括普通文件、链接文件、Socket 以及设备驱动等，对其进行相关操作时，都可能会创建对应的文件描述符。文件描述符（file ...

Have you ever needed to format a new hard drive or USB drive, and were given the option of selecting from acronyms like FAT, FAT32, or NTFS? Or did you once try plugging in an external device, only ...