[Solved] Given the commands below, what will be the output of echo $GREETING? GREETING="Hello" export GREETING GREETING="Hi" echo $GREETING | Linux CLI

Linux CLI - Environment and Configuration

Given the commands below, what will be the output of echo $GREETING?

GREETING="Hello"
export GREETING
GREETING="Hi"
echo $GREETING

AHello

B$GREETING

CHi

DError: variable not found

Step-by-Step Solution

Solution:

Step 1: Understand variable assignment and export
First, GREETING is set to "Hello" and exported, making it available to child processes. Then GREETING is reassigned to "Hi" in the current shell.
Step 2: Determine the value echoed
The echo command prints the current value of GREETING, which is "Hi" after reassignment.
Final Answer:
Hi -> Option C
Quick Check:
Variable reassignment updates value = Hi [OK]

Quick Trick: Last assignment before echo is the value printed [OK]

Common Mistakes:

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Given the commands below, what will be the output of echo $GREETING?