rdump(8) on Linux
The text 153fa58f2be0, as Debian 12 (Bookworm) shipped it.
ext2/3/4 filesystem backup
Flags it lists
-
-M -
-S -
-W -
-a -
-c -
-k -
-level# -
-m -
-n -
-q -
-u -
-v -
-w -
-y