Run ss -tulpn.
ss -tulpn
Lesson 157 of 360
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Networking · 8 minutes
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learner@clairos:/home/learner $
Unix ops lab: type a command, press Enter
Instructions
8 minutes
Click any instruction for the command details, the why, and the common mistake to avoid.
Run grep listen /etc/nginx/sites-available/learn.conf.
grep listen /etc/nginx/sites-available/learn.conf
Run ufw status.
ufw status
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Lesson support
What to notice while you play.
Read listener state with ss.
Run the commands in order and compare the outputs.
Junior operators build confidence by gathering evidence before changing systems.
- Skipping the inspection step.
- Assuming one command tells the whole story.
Reference
Commands in this lesson.
grep [-i] <text> <file>
Find literal text inside a file.
ss|ip
Inspect simulated sockets and addresses.
ssh|scp|ssh-keygen
Practice SSH inspection and dry-run transfer shapes without network access.