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+File::NFSLock - perl module to do NFS (or not) locking
+
+Program based of concept of hard linking of files being atomic
+across NFS. This concept was mentioned in Mail::Box::Locker (which
+was originally presented in Mail::Folder::Maildir). Some routine
+flow is taken from there -- particularly the idea of creating a
+random local file, hard linking a common file to the local file,
+and then checking the nlink status. Some ideologies were not complete
+(uncache mechanism, shared locking) and some coding was even
+incorrect (wrong stat index). File::NFSLock was written to be light,
+generic, and fast.