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<html>
<head><title>
HDF5/Tools Draft API Specification
</title></head>
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<h1>HDF5 Tools</h1>
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<h2>HDF5 Tool Interfaces</h2>
<p>
These tools enable the user to examine HDF5 files interactively.
<table border=0>
<tr><td valign=top>
<ul>
<li><a href="#Tools-Dump">h5dump</a> -- A tool for displaying
HDF5 file contents
<li><a href="#Tools-Ls">h5ls</a> -- A tool for listing specified
features of HDF5 file contents
<li><a href="#Tools-Repart">h5repart</a> -- A tool for repartitioning
a file, creating a family of files
</ul>
</td></tr>
</table>
<p>
<hr>
<dl>
<dt><strong>Tool Name:</strong> <a name="Tools-Dump">h5dump</a>
<dt><strong>Syntax:</strong>
<dd><code>h5dump
[-h]
[-bb]
[-header]
[-a </code><em>names</em><code>]
[-d </code><em>names</em><code>]
[-g </code><em>names</em><code>]
[-l </code><em>names</em><code>] </code>
<em>file</em>
<dt><strong>Purpose:</strong>
<dd>Displays HDF5 file contents.
<dt><strong>Description:</strong>
<dd><code>h5dump</code> enables the user to interactively examine
the contents of an HDF5 file and dump those contents,
in human readable form, to an ASCII file or to other tools.
<p>
<code>h5dump</code> displays HDF5 file content on
standard output. It may display the content of the
whole HDF5 file or selected objects, which can be groups,
datasets, links, or attributes.
<p>
The <code>-header</code> option displays object
header information only and must appear before the
<code>-a</code>, <code>-d</code>, <code>-g</code>, or
<code>-l</code> options.
<p>
Native data types created in one machine are displayed with native
names when <code>h5dump</code> runs in the same machine type. But when
<code>h5dump</code> runs in a different machine type, it displays the
native data types with standard type names. This will be changed in the
next release to always display with standard type names.
<p>
The <code>h5dump</code> output is described in detail in
<a href="../html/ddl.html">DDL</a>, the <cite>Data Description
Language</cite> document.
<dt><strong>Options and Parameters:</strong>
<dl>
<dt><code>-h</code>
<dd>Print information on this command.
<dt><code>-bb</code>
<dd>Displays the content of boot block. The default is
not to display.
<dt><code>-header</code>
<dd>Displays header information only; no data is displayed.
<dt><code>-a</code> <em>names</em>
<dd>Displays the specified attribute(s).
<dt><code>-d</code> <em>names</em>
<dd>Displays the specified dataset(s).
<dt><code>-g</code> <em>names</em>
<dd>Displays all the objects within the specified group(s).
<dt><code>-l</code> <em>names</em>
<dd>Displays the specified link value(s).
<dt><em>file</em>
<dd>The file to be examined.
</dl>
<dt><strong>Current Status:</strong>
<dd>The current version of <code>h5dump</code> can display the
following types of information:
<ul>
<li>Group name
<li>Attribute name, data type, data space, and data
<li>Dataset name, data type, data space, and data
<li>Soft link name, link value
</ul>
<dd>Limitions in the current implementaion include the
following:
<ul>
<li>Only one file is displayed at a time (file families are
not supported).
<li>The whole file content is displayed (none of above
options are supported).
<li>Compound data types are not yet supported.
<li>Complex data spaces are not yet supported.
</ul>
<dt><strong>See Also:</strong>
<dd>HDF5 Data Description Language syntax
(<a href="../html/ddl.html">DDL</a>)
</dl>
<hr>
<dl>
<dt><strong>Tool Name:</strong> <a name="Tools-Ls">h5ls</a>
<dt><strong>Syntax:</strong>
<dd><code>h5ls
[</code><em>options</em><code>]</code><em>
file</em><code>
[</code><em>objects...</em><code>]</code>
<dt><strong>Purpose:</strong>
<dd>Prints information about a file or dataset.
<dt><strong>Description:</strong>
<dd><code>h5ls</code> prints selected information about file objects
in the specified format.
<dt><strong>Options and Parameters:</strong>
<dl>
<dt><code>-h</code> or <code>-?</code> or <code>--help</code>
<dd>Print a usage message and exit.
<dt><code>-d</code> or <code>--dump</code>
<dd>Print the values of datasets.
<dt><code>-w</code><em>N</em> or <code>--width=</code><em>N</em>
<dd>Set the number of columns of output.
<dt><code>-v</code> or <code>--verbose</code>
<dd>Generate more verbose output.
<dt><code>-V</code> or <code>--version</code>
<dd>Print version number and exit.
<dt><em>file</em>
<dd>The file name may include a printf(3C) integer format
such as <code>%%05d</code> to open a file family.
<dt><em>objects</em>
<dd>The names of zero or more objects about which information
should be displayed. If a group is mentioned then
information about each of its members is displayed.
If no object names are specified then information about
all of the objects in the root group is displayed.
</dl>
<!--
<dt><strong>Current Status:</strong>
<dd>
<dt><strong>See Also:</strong>
<dd>
-->
</dl>
<hr>
<dl>
<dt><strong>Tool Name:</strong> <a name="Tools-Repart">h5repart</a>
<dt><strong>Syntax:</strong>
<dd><code>h5repart
[-v]
[-V]
[-[b|m]</code><em>N</em><code>[g|m|k]]</code>
<em>source_file
dest_file</em>
<dt><strong>Purpose:</strong>
<dd>Repartitions a file or family of files.
<dt><strong>Description:</strong>
<dd><code>h5repart</code> splits a single file into a family of
files, joins a family of files into a single file, or copies
one family of files to another while changing the size of the
family members. <code>h5repart</code> can also be used to
copy a single file to a single file with holes.
<p>
Sizes associated with the <code>-b</code> and <code>-m</code>
options may be suffixed with <code>g</code> for gigabytes,
<code>m</code> for megabytes, or <code>k</code> for kilobytes.
<p>
File family names include an integer <code>printf</code>
format such as <code>%d</code>.
<dt><strong>Options and Parameters:</strong>
<dl>
<dt><code>-v</code>
<dd>Produce verbose output.
<dt><code>-V</code>
<dd>Print a version number and exit.
<dt><code>-b</code><em>N</em>
<dd>The I/O block size, defaults to 1kB
<dt><code>-m</code><em>N</em>
<dd>The destination member size or 1GB
<dt><em>source_file</em>
<dd>The name of the source file
<dt><em>dest_file</em>
<dd>The name of the destination files
</dl>
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<dt><strong>Current Status:</strong>
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<dt><strong>See Also:</strong>
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Last modified: 9 September 1998
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