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Ethical Hacking Academy · Lesson

Parsing Output

grep and cut.

Turning Noise into Data

Tools produce walls of text. The skill that makes a recon script useful is parsing - extracting just the IPs, ports, or hostnames you care about.

This lesson focuses on grep and cut, with sort and uniq for cleanup.

Filtering with grep

Start by keeping only the relevant lines. To pull open ports from Nmap output, grep for the word open.

grep 'open' services.txt

All lessons in this course

  1. Script Basics
  2. Automating Recon
  3. Parsing Output
  4. Building a Recon Tool
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