使用法: ln [OPTION]... [-T] TARGET LINK_NAME (1番目の形式) または: ln [OPTION]... TARGET (2番目の形式) または: ln [OPTION]... TARGET... DIRECTORY (3番目の形式) または: ln [OPTION]... -t DIRECTORY TARGET... (4番目の形式) In the 1st form, create a link to TARGET with the name LINK_NAME. In the 2nd form, create a link to TARGET in the current directory. In the 3rd and 4th forms, create links to each TARGET in DIRECTORY. Create hard links by default, symbolic links with --symbolic. By default, each destination (name of new link) should not already exist. When creating hard links, each TARGET must exist. Symbolic links can hold arbitrary text; if later resolved, a relative link is interpreted in relation to its parent directory.
既定ではハードリンク (Hard links) となります。これをシンボリックリンク (Symbolic links) とするには、-sオプションを指定します。
$ ln -s dir1 dir2 $ ls -l 合計 4 dir1 dir2 -> dir1