scp(1) on macOS
The text 9a1f476a58f7, as macOS 10.15.3, macOS 10.15.2, macOS 10.15.1, macOS 10.15, macOS 10.14.6, macOS 10.14.5, macOS 10.14.4, macOS 10.14.3, macOS 10.14.2 shipped it.
secure copy (remote file copy program)
Flags it lists
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-3 -
-4 -
-6 -
-B -
-C -
-F -
-P -
-S -
-c -
-i -
-l -
-o -
-p -
-q -
-r -
-v