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This article mainly introduces "what is the use of the dev directory in linux". In the daily operation, I believe that many people have doubts about the use of the dev directory in linux. The editor consulted all kinds of materials and sorted out a simple and easy-to-use method of operation. I hope it will be helpful to answer the question of "what is the use of the dev directory in linux?" Next, please follow the editor to study!

In linux, the dev directory is the directory used to store hardware device information, and dev is the device abbreviation of the device, through which the hardware can be accessed directly; the directory is not a port to access these external devices, but a port to access these external devices.

The operating environment of this tutorial: linux7.3 system, Dell G3 computer.

What is the dev directory in linux

A directory under the / dev:Linux operating system that stores hardware device information through which the hardware can be accessed directly

Under linux, the / dev directory is important, and all kinds of devices are below. Here is a brief summary:

Dev is an acronym for device. The / dev directory is very important to all users. Because all the external devices used in Linux systems are included in this directory. But here is not the external device driver, which is different from the windows,dos operating system. It is actually a port to access these external devices. We can easily access these external devices, and there is no difference between accessing a file or a directory.

Linux follows the style of Unix, recognizing all devices as a file.

There are two types of device files: block device files (b) and character device files (c)

Device files are generally stored in the / dev directory, and common device files are described as follows:

/ dev/hd [amurt]: IDE device

/ dev/sd [amurz]: SCSI device

/ dev/fd [0-7]: standard floppy drive

/ dev/md [0-31]: soft raid device

/ dev/loop [0-7]: local loopback device

/ dev/ram [0-15]: memory

/ dev/null: infinite data receiving device, equivalent to a black hole

/ dev/zero: infinite zero resources

/ dev/tty [0-63]: virtual terminal

/ dev/ttyS [0-3]: serial port

/ dev/lp [0-3]: parallel port

/ dev/console: console

/ dev/fb [0-31]: framebuffer

/ dev/cdrom = > / dev/hdc

/ dev/modem = > / dev/ttyS [0-9]

/ dev/pilot = > / dev/ttyS [0-9]

/ dev/random: random number device

/ dev/urandom: random number device

At this point, the study on "what is the use of the dev directory in linux" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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