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This is my particular problem: I'm trying to set up git on a server, for which I'm doing a test on a locally installed apache on Ubuntu 14.04; for instance, I can do git clone fine over HTTP, but git push fails with insufficient permission for adding an object to repository database ./objects.

Now, in principle, I might have used strace for debugging this, but this kind of action goes through both git and apache, and as such I don't really know which process to strace. Furthermore, I cannot even tell what user does the end operation try to run as. The only thing that I know for sure is that it is the git repo ./objects directory which is being accessed, probably with the intent of creating a file there.

So I thought, probably the easiest for me would be if there was a program, that could be set to "listen" to accesses to a directory, and print out/log every such access to say stdout; in example as in this pseudocode:

$ ./traceDirectoryAccess --path /path/to/mygitrepo/objects
Listening for accesses on /path/to/mygitrepo/objects ...
Sat Apr  9 17:53:42 CEST 2016 - pid 1234, user myName (uid 1002) did:
 > create file /path/to/mygitrepo/objects/somefile
 > result: permission DENIED
...

Is there something like this out there? If there isn't a program per se, maybe there is some kernel facility (e.g. through a file in /sys/kernel/debug/ or similar?)

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Ok, found an answer on this very site: List the files accessed by a program explains that one can use LoggedFS or the Linux audit subsystem.

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