Run echo first > lab/change.txt.
echo first > lab/change.txt
Mission 63
Nano replace review
Start with redirected text, then review it in nano.
Nano and editingechonanocat
Lesson 63 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 nano lab/change.txt.
nano lab/change.txt
Run cat lab/change.txt.
cat lab/change.txt
Save progress
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Create a free account to sync completed lessons, XP, streaks, course status, and your next lesson across sessions.
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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.
Combine redirection, editing, and verification.
Write first, open nano, then cat.
A quick review loop prevents stale notes.
- Assuming a save happened without reading the file.
- Overwriting the wrong file.
Reference
Commands in this lesson.
echo <text>
Print text or write lab notes with >.
nano <file>
Open a simulated nano editor.
cat <file>
Print text file contents.