Run printf warning | tr a-z A-Z.
printf warning | tr a-z A-Z
Lesson 149 of 360
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Shell scripting · 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 printf INCIDENT | tr A-Z a-z.
printf INCIDENT | tr A-Z a-z
Run printf admin | tr a A.
printf admin | tr a A
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Lesson support
What to notice while you play.
Normalize labels before comparing output.
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.
printf <text>
Print formatted training text.
tr a-z A-Z
Transform piped text case.