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ELF file parser.
This provides a class ``ELFFile`` that parses an ELF executable in a similar
interface to ``ZipFile``. Only the read interface is implemented.
ELF header: https://refspecs.linuxfoundation.org/elf/gabi4+/ch4.eheader.html
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Representation of an ELF executable.
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The path recorded in the ``PT_INTERP`` section header.
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