Linux key command: Create link file

In Linux systems, link files are a very useful function. It can help users establish connection relationships between different directories, thereby easily jumping and accessing files. In this article, we'll cover how to use some key commands to create and manage linked files, and provide specific code examples.

1. Create a hard link

A hard link refers to the phenomenon that multiple file names point to the same inode. Through hard links, multiple file names can point to the same physical data block, so that when one file changes, the files pointed to by other hard links will also change accordingly. The following is an example of a command to create a hard link:

ln existing_file linked_file

Among them, existing_file is an existing file, and linked_file is the hard link file to be created. For example, if we want to create a hard link file named link.txt in the current directory, pointing to the existing origin.txt file, we can use the following command:

ln origin.txt link.txt

2. Create a soft link

Soft link refers to the phenomenon that a symbolic link file points to another file. The soft link file itself is just a pointer to the target file. When the target file is deleted or moved, the soft link will not be affected. The following is an example of a command to create a soft link:

ln -s target_file symlink_file

Among them, target_file is the target file to create a soft link, and symlink_file is the soft link file to be created. For example, if we want to create a soft link file named softlink.txt in the current directory, pointing to the existing target.txt file, we can use the following command:

ln -s target.txt softlink.txt

3. View link file information

Use the ls command to view the link information of the file, and use the -l parameter to display detailed information, including link count and link target. For example, you can use the following command to view the link information of all files in the current directory:

ls -l

4. Delete the linked file

If you need to delete the linked file, you can use the rm command. For hard link files, deleting the link file will not affect the original file and other hard link files; for soft link files, deleting the link file will only disconnect the target file and will not affect the target file. The following is an example of a command to delete a link file:

rm linked_file

For example, to delete the previously created link.txt hard link file, you can use the following command:

rm link.txt

5. Other commonly used commands

In addition to the key commands introduced above, there are some other commonly used commands that can help manage linked files, such as mv moving files, cp copying files, etc. These commands can operate on linked files while keeping the link relationship intact.

To summarize, mastering the key commands for establishing link files in Linux is of great significance to file management and organization. Through the commands and code examples introduced in this article, I hope readers can become more proficient in creating and managing link files and improve the efficiency of Linux systems.

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