sftp(1) on FreeBSD
The text 4d9cf3e01e4b, as FreeBSD 9.2-RELEASE shipped it.
secure file transfer program
Flags it lists
-
-1 -
-2 -
-4 -
-6 -
-B -
-C -
-D -
-F -
-P -
-R -
-S -
-b -
-c -
-i -
-l -
-o -
-p -
-q -
-r -
-v