nfsstat(1) on macOS
The text a5bbb8cafb19, as macOS 14.6, macOS 14.5, macOS 14.4, macOS 14.3, macOS 14.2, macOS 14.1, macOS 14.0 shipped it.
display NFS statistics
Flags it lists
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-3 -
-4 -
-c -
-e -
-f -
-n -
-s -
-u -
-v -
-w -
-z