Displaying useradd defaults | LinuC Level 1 102 Exam original practice question

1.08.1Basic

Display the current defaults used by useradd without creating a user.

Which command is appropriate?

Hint 1: Focus on account attributes

Separate account creation, home-directory handling, group membership, login identity, and password state before comparing the commands.

Hint 2: Key terms

Review the short definitions of account records, groups, home directories, shells, and password state involved.

useradd -D: The useradd mode that displays or changes default account-creation values.
Default values: Settings applied when a useradd invocation omits an individual option.
useradd -m: The form that creates a home directory for a new account.
useradd -r: The form that creates a system account.

Detailed explanation

Incorrectuseradd -m

Incorrect. -m is a creation option and a username is required.

Incorrectuseradd -r

Incorrect. -r creates a system account.

Incorrectusermod -D

Incorrect. Defaults are displayed by useradd, not usermod.

Correctuseradd -D

Correct. useradd -D prints the current defaults.

An example you can run in a temporary verification environment.

useradd -D

GROUP、HOME、SHELLなどの既定値一覧

Foundation review

Identity attributes such as a user ID, home directory, and login shell.

Primary and supplementary groups used during permission checks.

State and time limits that control password changes and account access.

Question IDKL-102-1028

Environmentshadow-utils useradd / 読み取りのみ

Last technical review2026-08-13

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