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Identify the error in this bash snippet:

medium📝 Debug Q14 of 15
Bash Scripting - Quoting and Expansion
Identify the error in this bash snippet:
#!/bin/bash
num=10
result=$((num / 0))
echo $result
AArithmetic expansion does not support division
BSyntax error due to missing spaces
CVariable num is not defined
DDivision by zero error causes runtime failure
Step-by-Step Solution
Solution:
  1. Step 1: Analyze the arithmetic expression

    The expression attempts to divide num (10) by 0.
  2. Step 2: Understand division by zero in bash

    Division by zero is not allowed and causes a runtime error in bash arithmetic expansion.
  3. Final Answer:

    Division by zero error causes runtime failure -> Option D
  4. Quick Check:

    Division by zero is invalid in $(( )) [OK]
Quick Trick: Never divide by zero inside $(( )) [OK]
Common Mistakes:
MISTAKES
  • Thinking it's a syntax error
  • Assuming division by zero returns zero
  • Believing arithmetic expansion disallows division

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