Re: feature request du/find

[Bernhard Voelker]

On 10/30/19 5:01 PM, Benjamin Arnold wrote:
> i was trying to determine the "real size" of a incremental backup
> created with rsync and hardlinks. To be more specific: "how much space
> will be freed if i delete this backup?"
>
> I've got it working, but in a very sloppy way.
>
> I wondered if it was possible and reasonable to add a feature to du or
> find, so that one can include only files with inode counter = 1.

'du' doesn't count twice:

  $ mkdir d1 \
      && dd if=/dev/zero of=d1/x bs=1M count=20 status=none \
      && cp -al d1 d2

  $ ls -lihog d1/x d2/x
  805939 -rw-r--r-- 2 20M Oct 30 19:04 d1/x
  805939 -rw-r--r-- 2 20M Oct 30 19:04 d2/x

  $ du -shxc d1 d2
  21M   d1
  4.0K  d2
  21M   total

FWIW: find has a "-links N" option.

Does that answer your question?

Have a nice day,
Berny