[Solved] What does the export command do in a Linux shell? — Ans: Makes a variable available to child processes | Linux CLI

Linux CLI - Environment and Configuration

What does the export command do in a Linux shell?

AChanges the value of an existing variable only in the current shell

BDeletes an environment variable

CDisplays all environment variables

DMakes a variable available to child processes

Step-by-Step Solution

Solution:

Step 1: Understand the role of export
The export command marks a variable to be passed to child processes.
Step 2: Differentiate from other commands
It does not delete, display, or only change local variables; it shares variables with subprocesses.
Final Answer:
Makes a variable available to child processes -> Option D
Quick Check:
export = share variable with children [OK]

Quick Trick: Use export to share variables with child processes [OK]

Common Mistakes:

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What does the export command do in a Linux shell?