fd(1) on Linux
The text 2442bae5e1d7, as Debian 3.0 (Woody) shipped it.
file & directory maintenance tool
Flags it lists
-
-- -
-a -
-c -
-d -
-e -
-f -
-h -
-i -
-k -
-l -
-m -
-n -
-r -
-s -
-t -
-u -
-v -
-x