The article provides a comprehensive guide on using the Linux `uniq` command to manipulate text by finding and filtering unique lines from files or standard output. It explains the basic syntax of the `uniq` command, including how to interact with files and stdout, and details various arguments and flags that modify its behavior. The tutorial highlights the importance of sorting text before using `uniq` to accurately count duplicate lines and demonstrates advanced techniques, such as skipping characters or fields, to tailor the output. The guide also discusses alternatives like `awk` and `sort` for similar tasks, addressing the limitations of `uniq` and showing how these commands offer more flexibility, albeit with increased complexity. By exploring these examples, users can effectively incorporate `uniq` into their text-processing toolkit, enhancing their ability to handle large datasets efficiently within Linux environments.