Why is du command showing double size when h flag is sent?

StackOverflow https://stackoverflow.com/questions/23599131

  •  20-07-2023
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Question

I want to check the total size of a git repository. Is funny that du is giving me two different kind of sizes when the -h flag is sent. It is actually giving double size.

Why is this? What is the correct size?

MyMac:~/repositories/my-repo.git davidrod$ du -h
  0B    ./branches
 64K    ./hooks
4.0K    ./info
  0B    ./objects/info
3.3M    ./objects/pack
3.3M    ./objects
4.0K    ./refs/heads
8.0K    ./refs/tags
 12K    ./refs
3.3M    .
MyMac:~/repositories/my-repo.git davidrod$ du 
0   ./branches
128 ./hooks
8   ./info
0   ./objects/info
6672    ./objects/pack
6672    ./objects
8   ./refs/heads
16  ./refs/tags
24  ./refs
6856    .
Was it helpful?

Solution

The size on OSX (which I assume you have from the computer name) is calculated on 512-byte blocks because the BSD version of du is used (other versions, like the Cygwin's one I am using now on Windows, behave differently).

So for every 1K you get two blocks, apparently doubling the value of every size.

OTHER TIPS

They're both correct. In the second case, the unit is blocks (512B each). 1 kilobyte = 2 blocks.

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