[Solved] Consider this script with set -u enabled:#!/bin/bash set -u if [ "$user" = "admin" ]; then echo "Welcome admin" fiWhat error occurs and how can it be resolved? | Bash Scripting

Bash Scripting - Error Handling

Consider this script with set -u enabled:

#!/bin/bash
set -u

if [ "$user" = "admin" ]; then
  echo "Welcome admin"
fi

What error occurs and how can it be resolved?

AError due to unset variable 'user'; fix by initializing 'user' before use

BSyntax error in if statement; fix by adding spaces around '='

CNo error; script runs fine with set -u

DError due to missing shebang; fix by adding '#!/bin/bash'

Step-by-Step Solution

Solution:

Step 1: Identify the error
With set -u, referencing an unset variable like user causes an error.
Step 2: Fix the error
Initialize user before the if statement, e.g., user="admin" or check if set.
Final Answer:
Error due to unset variable 'user'; fix by initializing 'user' before use -> Option A
Quick Check:
Unset variables cause errors with set -u [OK]

Quick Trick: Initialize variables before use with set -u enabled [OK]

Common Mistakes:

MISTAKES

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