[Solved] Which of the following is TRUE about variable expansion inside a here document? - Ans: Variables are expanded only if the delimiter is unquoted | Bash Scripting

Bash Scripting - Text Processing in Scripts

Which of the following is TRUE about variable expansion inside a here document?

AVariables are expanded only if the delimiter is unquoted

BVariables are always expanded regardless of delimiter quotes

CVariables are never expanded inside here documents

DVariables are expanded only if the delimiter is single quoted

Step-by-Step Solution

Solution:

Step 1: Recall delimiter quoting effect
If the delimiter is unquoted, variables inside the here document are expanded.
Step 2: Effect of quoting delimiter
If the delimiter is quoted (single or double quotes), variable expansion is disabled.
Final Answer:
Variables are expanded only if the delimiter is unquoted -> Option A
Quick Check:
Unquoted delimiter = variable expansion [OK]

Quick Trick: Use unquoted delimiter to expand variables inside here document [OK]

Common Mistakes:

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Which of the following is TRUE about variable expansion inside a here document?