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In the world of computing, data representation and transformation is a routine. Among the various data transformations, converting hexadecimal dumps to binary files is particularly useful, especially for developers and system administrators. One powerful tool that comes in handy for such transformations in Linux is xxd. This blog post provides a detailed Q&A session on how to use xxd -r for converting hex dumps back to binary, some simple examples, a practical script, and summaries the power of xxd. A: xxd is a command-line utility in Unix-like systems that creates a hex dump of a given binary file. It can also convert a hex dump back to its original binary form.