Linux Foundation LFCS Exam - Topic 5 Question 110 Discussion

Actual exam question for Linux Foundation's LFCS exam

Question #: 110
Topic #: 5

[All LFCS Questions]

When given the following command line.

echo "foo bar" | tee bar | cat

Which of the following output is created?

Acat

Bfoo bar

Ctee bar

Dbar

Efoo

Show Suggested Answer

Suggested Answer: B

by Mi at Mar 07, 2026, 03:55 PM

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Clarence

4 days ago

The output is definitely "foo bar".

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Jimmie

9 days ago

It's "foo bar", no doubt about it!

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Bok

14 days ago

I thought it would just be "bar".

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Kris

20 days ago

Wait, are you guys sure? What about the "tee" command?

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Cecil

25 days ago

I agree, it's "foo bar" for sure!

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Elliot

30 days ago

The output is definitely "foo bar".

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Tori

1 month ago

I feel like the answer is B) foo bar, but I might be mixing it up with another command. I need to double-check how piping works here.

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Glenn

1 month ago

I'm a bit confused about the options. Does tee actually output to both the terminal and the file? I can't recall if it affects the final output.

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Brigette

2 months ago

I remember practicing a similar question where tee was involved, and it seemed to duplicate the output. Maybe it outputs "foo bar" as well?

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Katina

2 months ago

I think the output should be "foo bar" since that's what gets echoed, but I'm not entirely sure how tee works in this context.

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