inotify

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Remember:

  • programs like vim write out a modified file to a new file and then rename it to give it the new name, so there is never any open or close event for the edited file itself, just a move and a delete event
  • deleting a file causes the watch to be removed with a separate IN_IGNORED event after the IN_DELETE_SELF event

Tips:

  • Use inotifywait -m foo.txt to show what events are generated when accessing the filesystem in particular ways.