mjhjmtu

I'm trying to move some data over and to start with I'd like to make sure that the size is ok. I run into a problem however, if I check the folder with

du -sh myfolder/
780M myfolder/

but

du -sh *
..
71M myfolder
..

I thought it might be something to do with hidden files but this particular folder does not have any inside.

Am I missing something?

Chances are that myfolder contains 709 MB worth of files that have another hard link in a subdirectory that is sorted lexicographically before myfolder. The du command reports each distinct file only the first time it sees it, so if a file has multiple links inside the tree(s) covered by a run of du, it's reported only once, under whichever directory was traversed first.

Here are a few ways you can look for hard links:

• 
  find myfolder -links +1 -type f lists all the files that have at least a second hard link under myfolder (+1 means “more than one”), regardless of where that link is.


• 
  find . -samefile myfolder/foo (with GNU find) lists all the hard links to myfolder/foo under the current directory. Since myfolder is under the current directory, this includes myfolder/foo itself.


• 
  find -type f -links +1 -printf '%i %pn' | sort -k1n (with GNU find) produces a list of hard-linked files under the current directory, grouped by inode number. Two files are the same if they are located on the same filesystem and they have the same inode number.