[Solved] What effect does enabling set -u have on variable usage in a bash script? - Ans: It causes the script to exit with an error if an unset variable is referenced | Bash Scripting

Bash Scripting - Error Handling

What effect does enabling set -u have on variable usage in a bash script?

AIt converts all variables to read-only

BIt automatically initializes unset variables to an empty string

CIt disables variable expansion entirely

DIt causes the script to exit with an error if an unset variable is referenced

Step-by-Step Solution

Solution:

Step 1: Understand set -u
This option treats any reference to an unset variable as an error.
Step 2: Effect on script execution
The script will terminate immediately if it tries to use a variable that has not been defined.
Final Answer:
It causes the script to exit with an error if an unset variable is referenced -> Option D
Quick Check:
Referencing unset variables triggers errors [OK]

Quick Trick: Unset variables cause errors with set -u enabled [OK]

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What effect does enabling set -u have on variable usage in a bash script?