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Arista ACE-P-ALE1.04 Exam - Topic 4 Question 124 Discussion

In bash scripting, which of the following is NOT valid way of evaluating an arithmetic expression?
C) $[]
A) $(( ))
B) ${}
D) let

Arista ACE-P-ALE1.04 Exam - Topic 4 Question 124 Discussion

Actual exam question for Arista's ACE-P-ALE1.04 exam
Question #: 124
Topic #: 4
[All ACE-P-ALE1.04 Questions]

In bash scripting, which of the following is NOT valid way of evaluating an arithmetic expression?

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Suggested Answer: C

by Dierdre at Apr 07, 2026, 11:35 PM

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Rory
29 days ago
Totally agree, B is the odd one out!
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Svetlana
1 month ago
B) ${} is not valid for arithmetic.
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Gayla
2 months ago
Let is definitely valid, but I’m leaning towards ${} being the one that doesn’t fit for arithmetic.
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Karina
2 months ago
I think $[] is also a way to evaluate expressions, but I can't recall if it's still used in modern scripts.
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Rose
2 months ago
I’m not sure about ${}, but I feel like it’s more for variable expansion than arithmetic.
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Rana
2 months ago
I remember practicing with arithmetic expressions, and I think $(( )) is definitely valid.
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