[Solved] How can you modify this script to avoid errors with set -u when reading multiple variables?#!/bin/bash set -u read -p "Enter name: " name read -p "Enter age: " age echo "Name: $name, Age: $age" | Bash Scripting

Bash Scripting - Error Handling

How can you modify this script to avoid errors with set -u when reading multiple variables?

#!/bin/bash
set -u

read -p "Enter name: " name
read -p "Enter age: " age

echo "Name: $name, Age: $age"

AInitialize variables with empty strings before read

BRemove quotes around variables in echo

CDisable set -u before echo and enable after

DUse parameter expansion with defaults when echoing

Step-by-Step Solution

Solution:

Step 1: Identify risk of unset variables
If user presses enter without input, variables may be empty but set; however, if variables are unset, set -u causes error.
Step 2: Use parameter expansion to provide defaults
Using ${name:-unknown} and ${age:-unknown} avoids errors if variables are unset.
Final Answer:
Use parameter expansion with defaults when echoing -> Option D
Quick Check:
Parameter expansion prevents unset errors in user input [OK]

Quick Trick: Use ${var:-default} for user input variables with set -u [OK]

Common Mistakes:

MISTAKES

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How can you modify this script to avoid errors with set -u when reading multiple variables?