[Solved] Why does this script fail? echo $var var=10 - Ans: Variable used before assignment | Bash Scripting

Bash Scripting - Variables

Why does this script fail?

echo $var
var=10

AVariable used before assignment

BVariable name is invalid

Cecho command is missing quotes

DBackslash causes syntax error

Step-by-Step Solution

Solution:

Step 1: Analyze the script
The script echoes $var before assigning it a value.
Step 2: Identify the cause of failure
Using the variable before assignment results in an empty value being printed instead of the expected output.
Final Answer:
Variable used before assignment -> Option A
Quick Check:
Variable used before assignment = A [OK]

Quick Trick: Assign variables before using them [OK]

Common Mistakes:

MISTAKES

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Why does this script fail?