Computer Science · Shell Scripting
What happens if a shell script encounters an undefined variable by default?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The script terminates immediately with an error
- 2The variable is automatically initialized to zero
- 3The variable expands to an empty (null) value✓
- 4An interactive prompt asks the user for a value
Correct answer
The variable expands to an empty (null) value
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