Selecting a login shell | LinuC Level 1 102 Exam original practice question

1.08.1Basic

Which command is appropriate?

Hint 1: Focus on the requirement

Identify what must change and what must remain unchanged. Then choose the command whose scope matches that requirement.

Hint 2: Check each command's role

Separate commands that display information, change state, remove data, or affect a child process.

useradd -d /bin/bash dev01: Incorrect. -d specifies the home directory path.
useradd -g /bin/bash dev01: Incorrect. -g specifies the primary group.
useradd -s /bin/bash dev01: Correct. -s /bin/bash sets the login shell.
useradd -G /bin/bash dev01: Incorrect. -G specifies supplementary groups.

Detailed explanation

Incorrectuseradd -d /bin/bash dev01

Incorrect. -d specifies the home directory path.

Incorrectuseradd -g /bin/bash dev01

Incorrect. -g specifies the primary group.

Correctuseradd -s /bin/bash dev01

Correct. -s /bin/bash sets the login shell.

Incorrectuseradd -G /bin/bash dev01

Incorrect. -G specifies supplementary groups.

An example you can run in a temporary verification environment.

useradd --help | grep -E -- '-s,|--shell'

-sまたは--shellの説明行

Foundation review

Check whether the command acts on the current shell, a new process, an existing process, or a file.

Use the supplied command and compare the output with the expected result.

Question IDKL-102-1015

Environmentshadow-utils useradd help / 状態変更なし

Last technical review2026-08-13