# Introduction In the grandiose halls of the Ming dynasty's palace, a scene of intense activity unfolds as the emperor's advisors hustle through the endless corridors, secretly vying for power and influence. You are the imperial court physician, hailing from a lineage of healers that dates back generations. However, your role extends beyond mere medicine; you have been bestowed with the vital task of safeguarding the empire's medicinal recipes and royal decrees, which are preserved in scrolls of unfathomable importance. The emperor, known for his wisdom and foresight, has deemed it necessary for these scrolls to be accessible only to those he trusts implicitly. As such, you have been granted the authority to control access to these scrolls, symbolizing the digital files within the Linux environment. Your ultimate goal in this lab is to ensure that only specific members of the imperial court possess the ability to read and modify these crucial documents. This endeavor requires mastering the art of `sudo`, a command that carries the weight of the emperor's trust.
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