Depending on platform and whether you want to poll for changes or be notified by event, you might want to look into File::Monitor, File::Monitor::Simple, Linux::Inotify2, Win32::ChangeNotify (and a couple of more referenced from there).

In reply to Re: Auto-Merging textfiles by Anonyrnous Monk
in thread Auto-Merging textfiles by Peamasii

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