expand-file-name do the similar things like readlink -f.

If you want to copy file path with a similar interface like find-file, here are two options to achieve it:

1. use expand-file-name to write your copy path function and add it to counsel-find-file actions and call it through M-o when you select the file. For more details, see ivy actions
2. use embark and run embark-action w.

expand-file-name do the similar things like readlink (or file-truename if you want to follow the symlink as mention by @hraban).

If you want to copy file path with a similar interface like find-file, here are two options to achieve it:

1. use expand-file-name to write your copy path function and add it to counsel-find-file actions and call it through M-o when you select the file. For more details, see ivy actions
2. use embark and run embark-action w.

You can use expand-file-name.

expand-file-name do the similar things like readlink -f.

If you want to copy file path with a similar interface like find-file, here are two options to achieve it:

1. use expand-file-name to write your copy path function and add it to counsel-find-file actions and call it through M-o when you select the file. For more details, see ivy actions
2. use embark and run embark-action w.