Getting user data through NSS | LinuC Level 1 102 Exam original practice question

1.08.1Basic

Retrieve passwd information for app01 according to the current NSS configuration, not just local files.

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.

getent: A command that queries a name-service database through the configured NSS sources.
NSS: Name Service Switch configuration that defines databases and lookup sources.
passwd database: The NSS database containing user account records.
group database: The NSS database containing group records.

Detailed explanation

Incorrectgrep '^app01:' /etc/passwd

Incorrect. grep reads only /etc/passwd.

Incorrectgetent group app01

Incorrect. It searches the group database.

Correctgetent passwd app01

Correct. It obtains app01 through the configured passwd sources.

Incorrectid -g app01

Incorrect. id -g displays only the primary GID.

An example you can run in a temporary verification environment.

getent passwd $(id -un)

現在ユーザーのpasswd形式のレコード

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-102-1035

Environmentglibc getent / 現在ユーザーの読み取りのみ

Last technical review2026-08-13

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