Linux System Management-topic 02: Managing Files (1) _2.4 link files _ln

In Linux, there are two types of links: Symbolic links (symbolic link) and hard links.

? Deleting a symbolic link does not affect the target file or directory to which this symbolic link points;

? In turn, deleting, moving, or renaming a target file or directory pointed to by a symbolic link does not cause the symbolic link to be deleted, only causing the symbolic link to "break".

? If a file has multiple hard links, only the last hard link is deleted and the hard link number is 0 o'clock the file is actually deleted from the file system;

? Because the inode is unique within only one file system (partition), hard links cannot span the file system;

? Symbolic links do not have the above limitations, have greater flexibility, and can even link files across different machines and different networks.

Usage: ln [options] ... Target Link name (first format)

Or: ln [options] ... Target (second format)

Or: ln [options] ... Goal... Table of contents (third format)

In the first format, create the specified name and point to the specified target link.

In the second format, create a link to the target location in the current directory.

In the third format, create a link to the specified destination in the specified directory.

A hard link is created by default, and a symbolic link is created when you use-S. Each specified target must exist when a hard link is created. A symbolic link can point to any location (including a nonexistent location).

? -D Create a hard link to the directory (for Superuser only)

? -F, forcibly overwrite any existing target file

? -I confirm before overwriting the file

? -S creating Symbolic links

Linux System Management-topic 02: Managing Files (1) _2.4 link files _ln