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One of the very powerful features of Linux file systems is symbolic links, more commonly known as soft links or simply symlinks. Symlinks make it much easier to get to a commonly used file or directory. Let’s assume we have a deep directory tree and want to make it easy to access myfile within it:

Now we can refer to that file as either shortcut/myfile or deep/directory/tree/myfile from the current directory.

Symlinks can point to other symlinks. For example, on the Debian system I’m typing this on, /usr/bin/vim is a symlink:

But the place it points to is also a symlink:

That’s not an uncommon configuration to handle the update-alternatives(1) mechanism.

Finding the True Path

There’s a really simple what of finding out where the real file is: realpath. Here it is in action:

When we traverse symlinked directories to get to our working directory, it can even be confusing as to where we are, because pwd will show the path with symlinks:

However, realpath can show where we really are:

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