Where is the Linux directory entry

File path                                                                 ​Path Example: /home/user/test.txt

Relative path: Starting from the current directory to the path to the target file or directory Example: Under the home path, writing uesr/test.txt cannot be written /user/test.txt

Attributes of the file
• File type

Everything under Linux is a file, ordinary files, Directory files, device files, link files, socket files, pipe files

Linux directory

represents the special directory Symbols:

1)~ represents the user’s home directory
2). represents the current directory

3).. Represents the upper-level directory

file directory: used to

identify

in the system File physical address , provided for retrieving files.

The file directory entries include:

File name

,
• i node number
• Linux directory structure (tree structure)

File System Hierarchy Standard (FHS)

• /: The starting point of the linux system directory tree bin:
Command file directory

, also called the binary directory

boot: Stores the system's

kernel files and boot loader files

dev:

Device files Directory, stores all device files, such as cdrom is a CD device

etc: stores

system configuration files, such as password files

home: contains the home directory

of each user in the system , and the subdirectory name is each user Name

lib: Stores various programming language libraries

media: The automatic mounting point set by the system, such as the automatic mounting point of a U disk

opt: Indicates optional Meaning, some

software packages will be installed here

usr: one of the largest directories. In many systems, this directory is mounted as an independent partition.

Mainly stores data that does not change frequently

, as well as the application directory installed under the system

mnt: Mainly used to

temporarily mount the file system, provided by default for some devices Mount point

proc: virtual file system, the files in this directory are images in memory

sbin: save the command file of the system administrator or root user

tmp : Store temporary files

var : Usually save frequently changing content, such as system logs, mail files, etc.

root : System administrator directory

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