usage:
h5edit [-h | --help] h5file
h5edit [OPTIONS] h5file
OPTIONS
   -h, --help
       Print a usage message and exit
   -c command, --command command:
       Specify an H5edit command to apply to the file h5file.
   --command-file commfile
       Specify a command file, commfile, that contains H5edit commands written
       in the H5edit Command Language, to apply to the file h5file.
   --dryrun
       (To be supported in future implementation)
       Just check the syntax of the H5edit commands against the HDF5 file
       without making the actual changes to the HDF5 file.
   --version
       Print the version information of h5edit.