Filesys::Notify::Simple - Simple and dumb file system watcher

       Tatsuhiko Miyagawa <miyagawa@bulknews.net>

       Filesys::Notify::Simple is a simple but unified interface to get notifications of changes to a given
       filesystem path. It utilizes inotify2 on Linux, fsevents on OS X, kqueue on FreeBSD and
       FindFirstChangeNotification on Windows if they're installed, with a fallback to the full directory scan
       if they're not available.

       There are some limitations in this module. If you don't like it, use File::ChangeNotify.

       •   There is no file name based filter. Do it in your own code.

       •   You can not get types of events (created, updated, deleted).

       •   Currently "wait" method blocks.

       In  return,  this  module  doesn't  depend  on any non-core modules. Platform specific optimizations with
       Linux::Inotify2, Mac::FSEvents, Filesys::Notify::KQueue and Win32::ChangeNotify are truely optional.

       NOTE: Using Win32::ChangeNotify may put additional limitations.

       •   Win32::ChangeNotify uses FindFirstChangeNotificationA so that Unicode characters can not be  handled.
           On cygwin (1.7 or later), Unicode characters should be able to be handled when Win32::ChangeNotify is
           not used.

       •   If more than 64 directories are included under the specified paths, an error occurrs.

       This  library  is  free  software;  you can redistribute it and/or modify it under the same terms as Perl
       itself.

       Filesys::Notify::Simple - Simple and dumb file system watcher

       File::ChangeNotify Mac::FSEvents Linux::Inotify2 Filesys::Notify::KQueue Win32::ChangeNotify

perl v5.36.0                                       2022-11-19                       Filesys::Notify::Simple(3pm)

         use Filesys::Notify::Simple;

         my $watcher = Filesys::Notify::Simple->new([ "." ]);
         $watcher->wait(sub {
             for my $event (@_) {
                 $event->{path} # full path of the file updated
             }
         });