Binary package “libfilesys-notify-simple-perl” in ubuntu xenial

simple file system monitor

 Filesys::Notify::Simple is a Perl module that provides a simple and unified
 interface to get notifications of changes for a given filesystem path. It can
 use inotify2 on Linux or fsevents on Mac OS X, kqueue on FreeBSD,
 FindFirstChangeNotification on Windows and otherwise falls back to a full
 directory scan.