Run nano lab/recovery-note.txt. Type exactly: before=443, change=8443, rollback=443 on separate lines, then save with Ctrl+O.
nano lab/recovery-note.txt
Mission 329
Nano recovery note
Write a rollback-oriented note and verify every required field.
Nano and editingnanogrepstat
Lesson 329 of 360
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Nano and editing · 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 rollback lab/recovery-note.txt.
grep rollback lab/recovery-note.txt
Run stat lab/recovery-note.txt.
stat lab/recovery-note.txt
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Lesson support
What to notice while you play.
Build repeatable confidence with recording recovery steps before an operational change.
Enter the requested before, change, and rollback lines; save once, then inspect.
Recording recovery steps before an operational change helps operators explain what they know before they change anything.
- Skipping the output that proves recording recovery steps before an operational change.
- Changing several things before recording a baseline.
Reference
Commands in this lesson.
nano <file>
Open a simulated nano editor.
grep [-i] <text> <file>
Find literal text inside a file.
stat <path>
Show lab file details.