TestOut Linux Pro Practice Test 2025 – Complete Exam Prep Guide

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Question: 1 / 400

After changing the SHELL variable, which command would you use to ensure the change has been applied?

echo $SHELL

To verify if the SHELL variable has been changed, you can use the `echo $SHELL` command. This command retrieves the current value of the SHELL environment variable and prints it to the terminal. By executing this command, you can observe the output directly, allowing you to confirm whether the change you made to the SHELL variable is reflected in the output.

While other commands may seem relevant, they either do not provide the intended functionality or do not specifically focus on displaying the value of the SHELL variable. For instance, `printenv SHELL` outputs the current environment variable as well, but it is not as straightforward or commonly used as echo in this context. Commands like `show SHELL` and `list $SHELL` do not exist in standard shell environments, which highlights why they would be ineffective in this scenario.

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printenv SHELL

show SHELL

list $SHELL

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