I\'m looking at building a file system sync utility that monitors file system activity, but it appears that some of the file system monitoring features in the linux kernel a
incron is a useful tool for the operations like this. You may create a configuration file for the directory or file that you want to watch.
http://inotify.aiken.cz/?section=incron&page=about&lang=en
in ubuntu
sudo apt-get install incron
/etc/incron.d/mynotification.conf
# notification for user creation
/home IN_ALL_EVENTS /opt/notify_user_created.sh $#