smemstat(8) on Linux
The text 9c059a7ab087, as Debian 11 (Bullseye) shipped it.
report memory usage with shared memory divided proportionally
Flags it lists
-
-T -
-a -
-c -
-d -
-g -
-h -
-k -
-l -
-m -
-o -
-p -
-q -
-s -
-t