scp(1) on macOS
The text af6e1d65c618, as Mac OS X 10.5.4, Mac OS X 10.5.3 shipped it.
secure copy (remote file copy program)
Flags it lists
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-1 -
-2 -
-4 -
-6 -
-B -
-C -
-E -
-F -
-P -
-S -
-c -
-i -
-l -
-o -
-p -
-q -
-r -
-v