ionice(1) on Linux
The text 63c3dce7a445, as Debian 8 (Jessie) shipped it.
set or get process I/O scheduling class and priority
Flags it lists
-
--class -
--classdata -
--help -
--ignore -
--pgid -
--pid -
--uid -
--version -
-P -
-V -
-c -
-h -
-n -
-p -
-t -
-u