Understand the difference between clearing the screen and resetting the lab.
Mission 04
Command history
Run a few safe commands, review history, and clear the display without resetting state.
Terminal basics
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learner@clairos:/home/learner $
Unix ops lab: type a command, press Enter
Lesson support
What to notice while you play.
Run echo training first so history has something to show.
History can help repeat safe commands, but it can also reveal pasted secrets in real shells.
- Thinking clear deletes command history.
- Putting secrets into shell commands.
Reference
Commands in this lesson.
echo <text>
Print text or write safe lab notes with >.
history
Show recent simulated commands.
clear
Clear terminal output.