scp(1) on macOS
The text 65a912b99b10, as Mac OS X 10.1.5, Mac OS X 10.1.4 shipped it.
secure copy (remote file copy program)
Flags it lists
-
-4 -
-6 -
-B -
-C -
-F -
-P -
-S -
-c -
-i -
-o -
-p -
-q -
-r -
-v