This is what I have:
--dir1 ----file1 ----file2
Then I created another directory dir2 with hard-links.
--dir2 ----file1 (hard link to dir1/file1) ----file2 (hard link to dir1/file2)
Now I removed file1 and recreated a new one with the same name.
How do I make the file1 in dir2 change the hard link to the new file?
You need to
rm dir2/file1 then redo the hardlink. Hardlinks are not like symlinks. Where symlinks are a pointer to an original file, hardlinks are generally indistinguishable from the original file. When you deleted
dir2/file1 became the new “original”. So, in order to have a hardlink named
dir2/file1, you have to get this now-original-file
dir2/file1 out of the way.