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Consider this script:

medium📝 Command Output Q5 of 15
Bash Scripting - Quoting and Expansion
Consider this script:
var="Hello   World"
echo $var
echo "$var"

What is the output?
AHello World Hello World
BHello World Hello World
CHello World Hello World
DHello World Hello World
Step-by-Step Solution
Solution:

  1. Step 1: Effect of unquoted variable in echo

    Unquoted $var collapses multiple spaces to one, so first echo prints "Hello World".

  2. Step 2: Effect of quoted variable in echo

    Quoted "$var" preserves all spaces, so second echo prints "Hello World" exactly.

  3. Final Answer:

    Hello World Hello World -> Option A

  4. Quick Check:

    Unquoted collapses spaces, quoted preserves = A [OK]
Quick Trick: Quotes preserve spaces inside variables [OK]
Common Mistakes:
MISTAKES
  • Assuming unquoted preserves spaces
  • Thinking quotes remove spaces
  • Confusing output order

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