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 output for 'h5ls -w80 -h'
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usage: h5ls [OPTIONS] [OBJECTS...]
  OPTIONS
   -h, -?, --help     Print a usage message and exit
   -a, --address      Print addresses for raw data
   -d, --data         Print the values of datasets
   -e, --errors       Show all HDF5 error reporting
   --follow-symlinks  Follow symbolic links (soft links and external links)
                      to display target object information.
                      Without this option, h5ls identifies a symbolic link
                      as a soft link or external link and prints the value
                      assigned to the symbolic link; it does not provide any
                      information regarding the target object or determine
                      whether the link is a dangling link.
   -f, --full         Print full path names instead of base names
   -g, --group        Show information about a group, not its contents
   -l, --label        Label members of compound datasets
   -r, --recursive    List all groups recursively, avoiding cycles
   -s, --string       Print 1-byte integer datasets as ASCII
   -S, --simple       Use a machine-readable output format
   -wN, --width=N     Set the number of columns of output
   -v, --verbose      Generate more verbose output
   -V, --version      Print version number and exit
   --vfd=DRIVER       Use the specified virtual file driver
   -x, --hexdump      Show raw data in hexadecimal format

  OBJECTS
    Each object consists of an HDF5 file name optionally followed by a
    slash and an object name within the file (if no object is specified
    within the file then the contents of the root group are displayed).
    The file name may include a printf(3C) integer format such as
    "%05d" to open a file family.

  Deprecated Options
    The following options have been deprecated in HDF5. While they remain
    available, they have been superseded as indicated and may be removed
    from HDF5 in the future. Use the indicated replacement option in all
    new work; where possible, existing scripts, et cetera, should also be
    updated to use the replacement option.

   -E or --external   Follow external links.
                      Replaced by --follow-symlinks.