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Linux Pipelines, xargs, split, diff, and Practical Recipes Cheat Sheet/Extract unique IP addresses

Print unique IPs from a log file.

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Section: Practical Recipes

Extract unique IP addresses

bash
bash
grep -Eo '([0-9]{1,3}.){3}[0-9]{1,3}' access.log | sort -u
Explanation

A fast shell approach for rough IP extraction from logs.

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