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| HDF5 Last Updated on 2026-07-28 The HDF5 Field Guide

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The HDF5 h5repart Tool

Navigate back: Main / HDF5 User Guide / Command Line Tools for HDF5 Files

# h5repart

## Introduction

With h5repart, you can repartition a file family. This program can be used to split a single file into a family of files, join a family of files into a single file, or copy one family to another while changing the size of the family members. It can also be used to copy a single file to a single file with holes.

## Usage

#### h5repart [OPTIONS] SRC DST

## SRC/DST

- SRC The name of the source file
- DST The name of the destination files

## Options

- -v Produce verbose output
- -V Print version number and exit
- -b N The I/O block size, defaults to 1kB
- -m N The destination member size or 1GB
- -family_to_sec2 Deprecated version of -family_to_single (below)
- -family_to_single Change file driver from family to the default single-file VFD (windows or sec2)

Sizes may be suffixed with 'g' for GB, 'm' for MB or 'k' for kB. File family names include an integer printf format such as '%d'

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Navigate back: Main / HDF5 User Guide / Command Line Tools for HDF5 Files