link

Create hard link

$ link [target] [linkname]

$ link [file.txt] [dir/file.txt]

link file1 file2

link creates a hard link between files. Unlike ln, it only creates hard links and takes exactly two arguments.
The tool creates an additional directory entry pointing to the same inode. Both names reference the same file data.

FILE1

Target file (source).

Link name (destination).

Cannot create symbolic links. Cannot link directories. Target must exist. Same filesystem only.

link is a POSIX utility providing a simple interface to the link() system call for creating hard links.

ln(1), unlink(1), readlink(1)