Package inotify-tools

Command line utilities for inotify

http://inotify-tools.sourceforge.net/

inotify-tools is a set of command-line programs for Linux providing
a simple interface to inotify. These programs can be used to monitor
and act upon filesystem events.

General Commands (Section 1)
inotifywait
inotifywait efficiently waits for changes to files using Linux's inotify(7) interface. It is suitable for waiting for changes to files from shell scripts. It...
inotifywatch
inotifywatch listens for filesystem events using Linux's inotify(7) interface, then outputs a summary count of the events received on each file or directory.