# Introduction Imagine yourself transported back to the 19th-century Victorian era, where gas lamps flicker in the mist and shadowy figures lurk in the cobblestone streets. You are the enigmatic detective, tasked with unraveling the mysteries of the city of Hadoopville. Your mission is to use your keen intellect and the tools at your disposal, such as the Hadoop FS Shell `chmod` command, to navigate the complexities of Hadoop HDFS and bring justice to the data realm.
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