scp(1) on macOS
The text 04a4b34fc25e, as Mac OS X 10.6.8, Mac OS X 10.6.7, Mac OS X 10.6.6, Mac OS X 10.6.5, Mac OS X 10.6.4, Mac OS X 10.6.3, Mac OS X 10.6.2, Mac OS X 10.6.1, Mac OS X 10.6, Mac OS X 10.5.8, Mac OS X 10.5.7, Mac OS X 10.5.6, Mac OS X 10.5.5 shipped it.
secure copy (remote file copy program)
Flags it lists
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-B -
-C -
-E -
-F -
-P -
-S -
-c -
-i -
-l -
-o -
-p -
-q -
-r -
-v