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This article mainly shows you "what is the meaning of the middle finger in linux", the content is simple and easy to understand, and the organization is clear. I hope it can help you solve your doubts. Let Xiaobian lead you to study and learn this article "what is the meaning of the middle finger in linux".

In means "create link" in linux. The in command is used to create a synchronous link for a specified file in another location. The syntax is "ln parameter source file target file"; hard links are created by default, and soft links are created to source files when the parameter is set to "-s."

Operating environment: Linux 7.3 system, Dell G3 computer.

ln is another very important command in linux. Its function is to establish a synchronous link for one file in another location. When we need to use the same file in different directories, we don't need to put a file in every directory we need, we just need to put the file in a fixed directory, and then link it with ln command in other directories.

1. Command Format:

ln [parameter][source file or directory][destination file or directory]

2. Command function:

Linux file system, there are so-called links (links), we can think of them as file aliases, and links can be divided into two types: hard link (hard link) means that a file can have multiple names, and soft link (symbolic link) is the way to create a special file, the content of the file is to point to the location of another file. Hard links exist in the same file system, while soft links can span different file systems.

Soft Links:

1. Soft links exist in the form of paths. Similar to shortcuts in Windows OS

2. Soft links can cross file systems, hard links cannot

3. Soft links can link to a file name that does not exist

4. Soft links can link to directories

Hard Links:

1. Hard links exist in the form of copies of files. But it doesn't take up real space.

2. Hard links to directories are not allowed

3. Hard links can only be created in the same file system

Here are two things to note:

First, ln keeps each linked file synchronized, meaning that no matter what you change, the rest of the file changes the same.

Second, ln links are divided into soft links and hard links. Soft links are ln -s source files and target files. They only generate a mirror image of a file at the location you select. They do not take up disk space. Hard links ln source files and target files. There is no parameter-s. They generate a file of the same size as the source file at the location you select. Whether soft links or hard links, files keep changing synchronously.

The ln directive is used to link files or directories. If more than two files or directories are specified at the same time, and the final destination is an existing directory, all the files or directories specified above will be copied to that directory. If multiple files or directories are specified at the same time and the final destination is not an existing directory, an error message appears.

3. Command Parameters:

Required parameters:

-b Delete, overwrite previously established links

-d Allow superusers to make hard links to directories

-f Enforcement

-i Interactive mode, prompt user if file exists

-n Think of symbolic links as general directories

-s soft link (symbolic link)

-v shows detailed processing

Select parameters:

-S "-S " or "--suffix="

-V "-V" or "--version-control="

--help Display help information

--version Display version information

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