Overriding every locale category | LinuC Level 1 102 Exam original practice question

1.08.3Basic

LANG and LC_TIME are set to Japanese UTF-8.

Temporarily override every locale category to C.

Which setting 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.

LANG=C: Incorrect. LANG is overridden by an existing LC_TIME and by LC_ALL.
LC_TIME=C: Incorrect. This changes only the time category.
LC_CTYPE=C: Incorrect. This changes only character classification.
LC_ALL=C: Correct. LC_ALL=C overrides all categories.

Detailed explanation

IncorrectLANG=C

Incorrect. LANG is overridden by an existing LC_TIME and by LC_ALL.

IncorrectLC_TIME=C

Incorrect. This changes only the time category.

IncorrectLC_CTYPE=C

Incorrect. This changes only character classification.

CorrectLC_ALL=C

Correct. LC_ALL=C overrides all categories.

An example you can run in a temporary verification environment.

LANG=ja_JP.UTF-8 LC_TIME=ja_JP.UTF-8 LC_ALL=C locale | sed -n '1,6p'

各LC_*の有効値がCとなる表示

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-102-1058

EnvironmentPOSIX locale / 子プロセス環境だけ変更

Last technical review2026-08-13