procinfo(8) on Linux
The text 6b1d9e8668c2, as Debian 5.0 (Lenny), Debian 4.0 (Etch) shipped it.
display system status gathered from /proc
Flags it lists
-
-D -
-F -
-S -
-a -
-b -
-d -
-f -
-h -
-i -
-m -
-n -
-r -
-v