Sandbox

Mess around in the fake server.

Use the same fake filesystem from the lessons. Create notes, edit with nano, inspect logs, check fake services, and reset any time.

0/25 lessons 0/7 missions

New learnerrank 0XP 0%complete

learner@clairos:/home/learner $ Unix ops lab: type a command, press Enter

Sandbox prompts

Use pwd, ls /, and cat /etc/hostname to map the fake server.
Create a new folder named lab and use nano lab/incident-notes.txt to save a note.
Use tail -n 3 /var/log/auth.log, then grep denied /var/log/auth.log.
Run ps and systemctl status nginx to inspect the fake service layer.
Run whoami, id, groups, and ufw status to practice security inspection.
Run nginx -t, df -h, free -h, and uptime to inspect fake operations health.
Try echo alpha beta beta | wc to practice a safe pipeline.

Mission board

Map the server

Find your location, list root, and read the fake hostname.

80 XP

Build a runbook

Create a lab note, edit it with nano, then read it back.

120 XP

Investigate logs

Tail the auth log and search for denied login attempts.

110 XP

Service check

Inspect fake processes and nginx service status.

100 XP

Security posture

Check identity, firewall status, and fake sudo boundaries.

130 XP

Validate nginx

Read the fake site config, search /api/, and run nginx -t.

120 XP

Pipeline practice

Use a safe text pipe and write one local note with redirection.

110 XP