at(1) on macOS
The text c1e1e7e4a0f9, as OS X 10.9.5, OS X 10.9.4, OS X 10.9.3, OS X 10.9.2, OS X 10.9.1, OS X 10.9 shipped it.
queue, examine, or delete jobs for later execution
Flags it lists
-
-b -
-c -
-d -
-f -
-l -
-m -
-q -
-r -
-t -
-v