fd(1) on Linux
The text f6553006fcd5, as Debian 7 (Wheezy) shipped it.
file & directory maintenance tool
Flags it lists
-
-- -
-C -
-N -
-P -
-S -
-T -
-a -
-b -
-c -
-d -
-e -
-f -
-h -
-i -
-k -
-l -
-m -
-n -
-o -
-r -
-s -
-t -
-u -
-v -
-x