Ooops, sorry, my fault, you can ignore this post.
The cause was a hard link (I only use symbolic links, which can be seen by normal ls invocation, but this was a hard link, not detected by normal ls invocation ...since I never use hard links, I supposed this was a copy and not a link). Sorry, you can ignore the post.
This was the original post, in case you are curious:
I'm experiencing this on 10.12.6, but I guess it can affect other versions too.
Let's suppose I have this directory (it's the build directory for the pyramid OpenGL sample from wxWidgets 3.1.1). As you can see, in the directory there are object code files (*.o), an executable (pyramid), and an app-bundle (pyramid.app)
du says the pyramid.app app-bundle takes 5460 kB:
But if I ask du to tell me the whole size of the directory, it changes opinion, and now the app-bundle takes only 56kB (!!) (in fact, note that the total size should be about 10MB, as the executable takes over 5MB, and the same executable is copied inside the app-bundle (before you ask: yes, it's copied, nor linked)... but du says the total size is 5668 kB:
BTW: Finder correctly says the size of this directory is 11.3 MB
Confused? Well, then get ready for what follows, because it can become funnier.
Let's remove the executable:
Let's see what du can tell us now:
Huh?? du changed opinion again!! Now the app-bundle takes 5460kB again, like in the first invocation.
The diagnostic is really puzzling, and I cannot find an explanation for it:
If a directory has an app-bundle, and it also has an executable with the same name as the app, then du won't take into account the size of the app-bundle. If there's no such executable, then it will take it into account.
But Finder gets it right...
The cause was a hard link (I only use symbolic links, which can be seen by normal ls invocation, but this was a hard link, not detected by normal ls invocation ...since I never use hard links, I supposed this was a copy and not a link). Sorry, you can ignore the post.
This was the original post, in case you are curious:
I'm experiencing this on 10.12.6, but I guess it can affect other versions too.
Let's suppose I have this directory (it's the build directory for the pyramid OpenGL sample from wxWidgets 3.1.1). As you can see, in the directory there are object code files (*.o), an executable (pyramid), and an app-bundle (pyramid.app)
Code:
iMac:pyramid asiga$ ls -l
total 11160
-rw-r--r-- 1 asiga staff 7989 18 may 11:45 Makefile
-rwxr-xr-x 2 asiga staff 5531688 18 may 14:37 pyramid
drwxr-xr-x 3 asiga staff 102 18 may 14:37 pyramid.app
-rw-r--r-- 1 asiga staff 7336 18 may 14:37 pyramid_mathstuff.o
-rw-r--r-- 1 asiga staff 616 18 may 14:37 pyramid_oglpfuncs.o
-rw-r--r-- 1 asiga staff 44056 18 may 14:37 pyramid_oglstuff.o
-rw-r--r-- 1 asiga staff 110984 18 may 14:37 pyramid_pyramid.odu says the pyramid.app app-bundle takes 5460 kB:
Code:
iMac:pyramid asiga$ du -k pyramid.app
5404 pyramid.app/Contents/MacOS
48 pyramid.app/Contents/Resources
5460 pyramid.app/Contents
5460 pyramid.appBut if I ask du to tell me the whole size of the directory, it changes opinion, and now the app-bundle takes only 56kB (!!) (in fact, note that the total size should be about 10MB, as the executable takes over 5MB, and the same executable is copied inside the app-bundle (before you ask: yes, it's copied, nor linked)... but du says the total size is 5668 kB:
Code:
iMac:pyramid asiga$ du -k
24 ./.deps
0 ./pyramid.app/Contents/MacOS
48 ./pyramid.app/Contents/Resources
56 ./pyramid.app/Contents
56 ./pyramid.app
5668 .BTW: Finder correctly says the size of this directory is 11.3 MB
Confused? Well, then get ready for what follows, because it can become funnier.
Let's remove the executable:
Code:
iMac:pyramid asiga$ rm pyramid
iMac:pyramid asiga$ ls -l
total 352
-rw-r--r-- 1 asiga staff 7989 18 may 11:45 Makefile
drwxr-xr-x 3 asiga staff 102 18 may 14:37 pyramid.app
-rw-r--r-- 1 asiga staff 7336 18 may 14:37 pyramid_mathstuff.o
-rw-r--r-- 1 asiga staff 616 18 may 14:37 pyramid_oglpfuncs.o
-rw-r--r-- 1 asiga staff 44056 18 may 14:37 pyramid_oglstuff.o
-rw-r--r-- 1 asiga staff 110984 18 may 14:37 pyramid_pyramid.oLet's see what du can tell us now:
Code:
iMac:pyramid asiga$ du -k
24 ./.deps
5404 ./pyramid.app/Contents/MacOS
48 ./pyramid.app/Contents/Resources
5460 ./pyramid.app/Contents
5460 ./pyramid.app
5668 .Huh?? du changed opinion again!! Now the app-bundle takes 5460kB again, like in the first invocation.
The diagnostic is really puzzling, and I cannot find an explanation for it:
If a directory has an app-bundle, and it also has an executable with the same name as the app, then du won't take into account the size of the app-bundle. If there's no such executable, then it will take it into account.
But Finder gets it right...
Last edited: