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The h5copy utility can be used to copy an object or objects from one HDF5 file to another or to a different location in the same file. It uses the  H5Ocopy  and  H5Lcopy  APIs H5O_COPY  and  H5L_COPY  APIs in HDF5.

Following are some of the options that can be used with h5copy.

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The user block is a space in an HDF5 file that is not interpreted by the HDF5 library. It is a property list that can be added when creating a file. See the H5PsetH5P_userblockSET_USERBLOCK API in the HDF5 Reference Manual for more information regarding this property.

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Let's say you wanted to add the program that creates an HDF5 file to its user block. As an example, you can take the h5_crtgrpar.c program from the HDF5 Introductory Tutorial Examples and add it to the file it creates, groups.h5. This can be done with h5jam, as follows:

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