What's a file?

`link`

        ...
        MAKE_SLIDES          802886
        blookus              142857
        Makefile             802887
        woogums              142857
        ...

How can I create this situation, anyway?

      int result = link("blookus", "woogums");

It's called link because it creates a link

Unix command is called ln

Short for "link"

Now let's have a demo