Run sha256sum scripts/deploy.sh.
sha256sum scripts/deploy.sh
Mission 298
Capstone bad deploy
Review deployment script, config diff, nginx validation, and rollback notes.
Capstone labssha256sumdiffnginxtee
Lesson 298 of 360
0/360 lessons
0/17 missions
Capstone labs · 8 minutes
New learnerrank
0XP
0%complete
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 diff data/config-a.conf data/config-b.conf.
diff data/config-a.conf data/config-b.conf
Run nginx -t.
nginx -t
Run printf rollback-ready | tee lab/deploy-rollback.txt.
printf rollback-ready | tee lab/deploy-rollback.txt
Save progress
Keep learning across sessions.
Create a free account to sync completed lessons, XP, streaks, course status, and your next lesson across sessions.
Checking account status...
Progress sync is idle.
0XP
New learnerrank
0day streak
0best streak
0daily streak
0lessons
0courses
0missions
0tasks
Noverified
Progress sync stores completion IDs, scores, streaks, badges, and game settings. Terminal contents, editor snippets, lab scratch, email, and real names are never published on leaderboards or share cards.
Lesson support
What to notice while you play.
Review deployment script, config diff, nginx validation, and rollback notes.
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.
tee <file>
Write piped text to a lab file and keep it on screen.
diff <left> <right>
Compare two lab text files.
sha256sum <file>
Print a deterministic training checksum.
nginx -t
Validate training nginx configuration.