h5totxt(1) on Linux
The text bcb8aa186a81, as Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch) shipped it.
generate comma-delimited text from 2d slices of HDF5 files
Flags it lists
-
-. -
-0 -
-T -
-V -
-d -
-h -
-o -
-s -
-t -
-v -
-x -
-y -
-z