Makes a link to a file
ln [options] existing-file new-link
ln [options] existing-file-list directory
The first format creates a link between an existing file and a new filename. The second format links existing files into a different directory. The new links have the same simple filenames as the original files but have different full pathnames.
By default ln makes hard links. A hard link to a file is indistinguishable from the original filename. All hard links to a file must be in the same filesystem as the original file.
You can also use ln to create symbolic links. Unlike a hard link, a symbolic link can exist in a different filesystem from the linked-to file. Also, a symbolic link can connect to a directory. Refer to page 126 for more ...