gfsched(1) on Linux
The text 811f7c014d6a, as Debian 10 (Buster), Debian 9 (Stretch) shipped it.
schedule and display available file system nodes
Flags it lists
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-? -
-D -
-L -
-M -
-O -
-P -
-S -
-c -
-f -
-l -
-n -
-w