sed(1) on macOS
The text a65e8f70247e, as Mac OS X 10.5.8, Mac OS X 10.5.7, Mac OS X 10.5.6, Mac OS X 10.5.5, Mac OS X 10.5.4, Mac OS X 10.5.3, Mac OS X 10.5.2, Mac OS X 10.5.1, Mac OS X 10.5 shipped it.
stream editor
Flags it lists
-
-E -
-a -
-e -
-f -
-i -
-l -
-n