newfs(8) on OpenBSD
The text 13a090b8f12c, as OpenBSD 4.0 shipped it.
construct a new file system
Flags it lists
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-g -
-h -
-i -
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-l -
-m -
-o -
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-q -
-r -
-s -
-t -
-u -
-x -
-z