Run which nano.
which nano
Mission 27
Command locations
Use which to understand how shells find commands.
Terminal basicswhich
Lesson 27 of 360
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Terminal basics · 6 minutes
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learner@clairos:/home/learner $
Unix ops lab: type a command, press Enter
Instructions
6 minutes
Click any instruction for the command details, the why, and the common mistake to avoid.
Run which systemctl.
which systemctl
Run which ufw.
which ufw
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Lesson support
What to notice while you play.
Understand PATH lookup at a beginner-friendly level.
Try which nano and which systemctl.
Knowing where commands come from helps debug confusing PATH issues.
- Assuming every command is built into the shell.
- Trusting an unknown command path without checking it.
Reference
Commands in this lesson.
which <command>
Locate command paths.