What does dev mean in linux

dev is the abbreviation of device in Linux and is the directory where the Linux system stores hardware device information. Dev plays a very important role in the Linux system. It is used to store hardware device information. The hardware can be directly accessed through the directory under it.

#The operating system of this tutorial: linux5.18.14 system, Dell G3 computer.

dev is the abbreviation of device. Dev plays a very important role in the Linux system. It is a directory under Linux, and various devices are under it. So what does dev mean in Linux systems? Please see below for details.

The English abbreviation of dev device device. The /dev directory is very important to all users. Because this directory contains all external devices used in Linux systems. But the drivers for external devices are not placed here, which is different from Windows and DOS operating systems. It is actually a port to access these external devices. We can access these external devices very conveniently, and there is no difference from accessing a file or a directory. Linux follows the Unix style and recognizes all devices as one file.

Device files are generally stored in the /dev directory. Common device files are described as follows:

/dev/hd[a-t]: IDE device

/dev/sd [a-z]:SCSI devices and SATA devices

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

/dev/md[0-31]:Software raid devices

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

/dev/ram[0-15]: Memory

The last number represents the disk partition.

So /dev/sda3 represents the third partition of the first SATA interface hard disk.

Extended reading:

Linux, full name GNU/Linux, is a UNIX-like operating system that is free to use and freely disseminated. Its kernel was developed by Linus Benedikt Thomas. Watts was first released on October 5, 1991. It is mainly inspired by the ideas of Minix and Unix. It is a POSIX-based multi-user, multi-tasking operating system that supports multi-threading and multi-CPU. It supports 32-bit and 64-bit hardware and can run major Unix software tools, applications and network protocols.

Linux inherits the network-centric design philosophy of Unix and is a multi-user network operating system with stable performance. There are hundreds of different Linux distributions, such as Debian and Archlinux based on community development, and Red Hat Enterprise Linux, SUSE, Oracle Linux, etc. based on commercial development.

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