Passing search results to one command invocation | LinuC Level 1 101 Exam original practice question

1.02.2Standard

Find regular *.conf files under current and pass as many results as possible together to chmod g-w.

Which command is appropriate?

Hint 1: Focus on the requirement

Identify the result placeholder and whether the expression batches paths or runs once per path.

Hint 2: Key terms

Review the short command and filesystem definitions before comparing the choices.

find -exec: A find action that invokes another command with matched paths.
{} placeholder: The position replaced by one or more matched pathnames.
Batch terminator: The plus form that passes several paths to one command invocation.
Per-item terminator: The escaped semicolon form that invokes once for each match.

Detailed explanation

Incorrectfind current -type f -name '*.conf' -exec chmod g-w

Incorrect. The -exec expression is incomplete without a terminator.

Incorrectfind current -type f -name '*.conf' -exec chmod g-w {} \;

Incorrect. \; terminates -exec but usually invokes chmod once per file.

Incorrectfind current -type f -name '*.conf' -exec {} chmod g-w +

Incorrect. The command and placeholder are in the wrong order.

Correctfind current -type f -name '*.conf' -exec chmod g-w {} +

Correct. -exec chmod g-w {} + batches matching paths.

Try it yourself

An example you can run in a temporary verification environment.

tmp=$(mktemp -d); touch "$tmp/a.conf" "$tmp/b.conf"; chmod 660 "$tmp/a.conf" "$tmp/b.conf"; find "$tmp" -type f -name '*.conf' -exec chmod g-w {} +; stat -c '%a' "$tmp/a.conf" "$tmp/b.conf"; rm -rf "$tmp"

Expected result

640
640

Key points

{} is replaced by results
+ batches results
\; runs one at a time

Notes

Environment: GNU findutils 4.x / GNU chmod / 一時ファイル
Use disposable files and directories for destructive or timestamp-related checks.
Command details can vary slightly between GNU and non-GNU implementations.

Foundation review

Place the operation

Both terminators are valid, but the plus form reduces process launches by batching arguments.

Check the side effect

Use harmless commands and temporary files when observing invocation grouping.

Question IDKL-101-405

EnvironmentGNU findutils 4.x / GNU chmod / 一時ファイル

Last technical review2026-08-13

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