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File::ChangeNotify - Watch for changes to files, cross-platform style


version 0.31


    use File::ChangeNotify;

    my $watcher =
            ( directories => [ '/my/path', '/my/other' ],
              filter      => qr/\.(?:pm|conf|yml)$/,

    if ( my @events = $watcher->new_events ) { ... }

    # blocking
    while ( my @events = $watcher->wait_for_events ) { ... }


This module provides an API for creating a File::ChangeNotify::Watcher subclass that will work on your platform.

Most of the documentation for this distro is in File::ChangeNotify::Watcher.


This class provides the following methods:


This method looks at each available subclass of File::ChangeNotify::Watcher and instantiates the first one it can load, using the arguments you provided.

It always tries to use the File::ChangeNotify::Watcher::Default class last, on the assumption that any other class that is available is a better option.


Returns a list of all the loadable File::ChangeNotify::Watcher subclasses except for File::ChangeNotify::Watcher::Default, which is always usable.


Bugs may be submitted at or via email to

I am also usually active on IRC as 'autarch' on irc://


The source code repository for File-ChangeNotify can be found at


If you'd like to thank me for the work I've done on this module, please consider making a "donation" to me via PayPal. I spend a lot of free time creating free software, and would appreciate any support you'd care to offer.

Please note that I am not suggesting that you must do this in order for me to continue working on this particular software. I will continue to do so, inasmuch as I have in the past, for as long as it interests me.

Similarly, a donation made in this way will probably not make me work on this software much more, unless I get so many donations that I can consider working on free software full time (let's all have a chuckle at that together).

To donate, log into PayPal and send money to, or use the button at


Dave Rolsky <>


  • Aaron Crane <>

  • H. Merijn Branch <>

  • Karen Etheridge <>


This software is Copyright (c) 2009 - 2019 by Dave Rolsky.

This is free software, licensed under:

  The Artistic License 2.0 (GPL Compatible)

The full text of the license can be found in the LICENSE file included with this distribution.