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ln is the Linux command for creating a link to a file or folder.

To create a relative link:

ln -r --symbolic ./<existing file> <name for link>

Relative links will still work even if the folder containing both files (the original and the link) is moved or copied.


I pretty much always get confused as to which is the link and which is the target, so here's an example. You're inside «/git/futilities/human/ff» and you want to create a link called "lib" to the "lib" folder at «/git/futilities/lib»:

ln -r --symbolic ../../lib/ ./lib

..or, in other words:

ln -r --symbolic <actual file> <link-to-file>