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named-checkconf(8) on macOS

The text 7c29d5f52cb8, as Mac OS X 10.7.4, Mac OS X 10.7.3, Mac OS X 10.7.2, Mac OS X 10.7.1, Mac OS X 10.7 shipped it.

named configuration file syntax checking tool

Flags it lists

named-checkconf(8) on macOS now