在Linux操作系统中把外部设备当作文件统一管理，外部设备文件通常放在()目录中。
- A.／dev
- B.／lib
- C.／etc
- D.／bin
正确答案及解析
正确答案
解析
本题测试Linux中有关文件系统与设备文件管理的概念和知识。
在Linux系统中，把每一种I／O设备都映射成为一个设备文件，可以像普通文件一样处理，这就使得文件与设备的操作尽可能统一。外部设备文件分为字符设备文件和块设备文件，对应于字符设备和块设备。Linux把对设备的I／O作为普通文件的读取／写入操作内核提供了对设备处理和对文件处理的统一接口。每一种I／O设备对应一个设备文件，存放在／dev目录中，如行式打印机对应／dev／lp，第一个软盘驱动器：／dev／fd0等。
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