pub fn hard_link<P: AsRef<Path>, Q: AsRef<Path>>(src: P, dst: Q) -> Result<()>
Creates a new hard link on the filesystem.
dst path will be a link pointing to the
src path. Note that systems
often require these two paths to both be located on the same filesystem.
use std::fs; try!(fs::hard_link("a.txt", "b.txt"));