[This question][1] was closed as off topic but it is perfectly valid and on topic. The OP was not very clear and at first glance it might look like a programming issue (I imagine that is why it was closed) but it is not. It is simply about how one can find out which process is accessing a particular file on Linux. It has also been answered quite correctly (`lsof`).

I can understand if the question was closed because it was [cross-posted][2] on U&L but in that case, it should be closed for the correct reasons and a comment explaining why cross posting is [frowned upon][3] added.


  [1]: https://superuser.com/q/583157/151431
  [2]: https://unix.stackexchange.com/q/72517/22222
  [3]: https://meta.stackexchange.com/q/64068/203101