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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def run(cmd):
 """Prepare and run a subprocess cmd, returning a CompletedProcess."""

    print("Preparing the following cmd:")
    cmd = prepare_subprocess_cmd(cmd)
    print("Running the following cmd:")
    print('\n'.join(cmd))
    return subprocess.run(cmd, stdout=sys.stdout, stderr=sys.stderr)