h5totxt(1) on Linux
The text e2320366f61a, as Debian 5.0 (Lenny), Debian 4.0 (Etch) 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