follow-file-0.0.3: Be notified when a file gets appended, solely with what was added. Warning - only works on linux and for files that are strictly appended, like log files.

 :: (MonadIO m, MonadMask m, MonadBaseControl IO m) => INotify -> Path Abs File -> (ConduitT i ByteString m () -> m ()) Monadic state of m is thrown away for each invocation, not synchronously interleaved. -> m WatchDescriptor
follow takes a file, and informs you only when it changes. If it's deleted, | you're notified with an empty ByteString. If it doesn't exist yet, you'll be informed | of its entire contents upon it's creation, and will proceed to "follow it" as normal.