How to Display Unique Content from a File in Linux (Using uniq Command) | Secure 2 Cyber

Published: 12 October 2025
on channel: Secure2Cyber

In this video, you’ll learn how to display unique content from a file in Linux using the uniq command.
The uniq command helps you filter out duplicate lines in a file, making it easy to view only unique entries — perfect for analyzing logs, lists, or configuration files.

🖥️ Commands Covered:

uniq filename – Display unique lines (removes consecutive duplicates)

sort filename | uniq – Sort and remove all duplicates

uniq -c filename – Show how many times each line appears

uniq -d filename – Display only duplicate lines

uniq -u filename – Display only unique (non-repeated) lines

💡 The uniq command is often used with sort for accurate results, especially when duplicates aren’t grouped together in a file.

Perfect for Linux learners, cybersecurity students, and system admins who want to master terminal commands quickly.

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