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This article mainly introduces how linux accesses the device, which has a certain reference value. Interested friends can refer to it. I hope you will gain a lot after reading this article. Let's take a look at it.

In linux, the device is accessed by accessing files; because the linux system treats all hardware devices as files, it needs to mount the device to the system, the device corresponds to the device file, and to access a device file is to access a device.

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

How does linux access the device

In linux, the device is accessed by accessing files. Is to read and write the device as a special file.

Because the Linux system treats all hardware devices as files, when using hardware devices such as optical drives, they must be mounted to the system so that Linux can identify them.

The so-called Linux system "everything is a file". All files are placed in a tree structure with the root directory as the root of the tree. In Linux's view, any hardware device is also a file, each with its own set of file systems (file directory structure).

When using these hardware devices in the Linux system, only by combining the file directory of the Linux itself with the file directory of the hardware device can the hardware device be used by us. The process of merging two into one is called "mounting".

If it is not mounted, the hardware device can be found through the graphical interface system in the Linux system, but it cannot be found on the command line.

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