Creating links in different directories (Linux/UNIX)

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When using `ln` to create a link in a different directory, the semantics of creating hard and symbolic links differ. That is because a hard link contains a direct reference to its target's data, while a symbolic link is just a string containing a (possibly relative) path. You can get around this by using absoute paths, but then moving a subtree will break the symlink.

Just to recap, the other main differences between hard and symbolic links: Symbolic links can be left dangling when their target is removed; hard links cannot. Symbolic links can point to files on other partitions or disks, while hard links cannot.

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