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/ bin

Bin is an acronym for Binary, and this directory contains binary command files that can be used by ordinary users.

/ boot

Here are some kernel and boot files used to boot the system.

/ dev

Dev is the abbreviation of device. In this directory are the external devices of the system. The way to access the device in Linux is the same as the way to access files. You need to mount the device to the directory for access.

/ etc

Here are the configuration files for the system and software.

/ home

This is the home directory of the average user.

/ lib

Here are the library files.

/ lib64

64-bit library file

/ media

This is the mount point directory for mobile devices such as USB drives, CD, etc.

/ mnt

This is the mount point directory for mounting additional temporary file systems.

/ opt

The directory where the third release software is installed.

/ proc

This is a virtual directory, which is the virtual file system storage directory for system kernel and process information.

/ root

The superuser's home directory.

/ sbin

The superuser command stores the directory.

/ sys

This is also a pseudo file system, which is a big change in the linux2.6 kernel. A new filesystem sysfs in the 2.6 kernel is installed in this directory. The sysfs file system integrates the following three types of file system information: the proc file system for process information, the devfs file system for devices, and the devpts file system for pseudo-terminals. The file system is an intuitive reflection of the kernel device tree. When a kernel object is created, the corresponding files and directories are also created in the kernel object subsystem.

Details: http://www.ibm.com/developerworks/cn/linux/l-cn-sysfs/

/ var

This is a changing directory, which contains things that are constantly expanding, and we are used to putting directories that are often modified under this directory. Including various log files.

/ usr

This is a very important directory where many of your applications and files are placed, similar to the program files directory under windows. Save the user program data, help files, binary commands and other files.

/ run

Is a temporary file system that stores information since the system was started. When the system restarts, the files in this directory should be deleted or erased. If you have a / var/run directory on your system, you should make it point to run.

/ tmp

This directory is used to store some temporary files.

/ srv

This directory stores some data that needs to be extracted after the service is started.

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