Understand how one command's output can become another command's input.
Mission 12
Text pipelines
Use safe simulated pipes to count, sort, and deduplicate text output.
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learner@clairos:/home/learner $
Unix ops lab: type a command, press Enter
Lesson support
What to notice while you play.
Use echo with quoted words before trying cat with a pipe.
Pipelines make terminals powerful, but this lab keeps them tightly limited.
- Trying shell operators that are not part of the simulator.
- Expecting pipes to run arbitrary programs.
Reference
Commands in this lesson.
echo <text>
Print text or write safe lab notes with >.
wc [-l] <file>
Count lines, words, and characters.
sort|uniq
Practice simple text pipelines.