Linux----hard and soft connections

One, the concept

In a Linux file system, files stored in a disk partition, regardless of type, are assigned a number called the index node number (Inode index).

• Hard Links

1. Multiple file names point to the same index node (multiple copies of a file)

2. Allows a file to have multiple valid paths, and users can create hard links to important files to prevent "accidental deletion" of the disaster.

3. If a file has a hard link, the file deletion condition is (all the hard links associated with it are deleted)

• Soft connection

1. Soft joins are also known as symbolic links, similar to Windows shortcuts

2. In a symbolic link, a file is a text file that contains the location information of another file

Second, the experiment

• Hard links from which you can find F2 are F1 (the same index node number)
• F3 is a soft connection of F1

• Hard links are not affected and soft connections are invalid when the original file F1 is deleted

Three, summary

1. Hard-link files are not affected after the original file is deleted, and the soft connection file fails
2. Delete hard-link files, both original and soft connection files are unaffected
3. Delete Soft connection file, original file and hard link file are unaffected
4. Delete the original file and the hard link file, the file is really deleted

Linux----hard and soft connections