fpsync(1) on Linux
The text b87ddb8ea24c, as Debian 11 (Bullseye) shipped it.
Synchronize directories in parallel using fpart + rsync or cpio
Flags it lists
-
-E -
-O -
-S -
-d -
-f -
-h -
-m -
-n -
-o -
-r -
-s -
-t -
-v -
-w