Summarizing directory usage | LinuC Level 1 101 Exam original practice question

1.05.3Basic

Calculate one readable total for all data below /var/log.

Which command is appropriate?

Hint 1: Focus on the requirement

Use a recursive directory total rather than the capacity of the containing filesystem.

Hint 2: Key terms

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

Detailed explanation

Incorrectdf -h /var/log

Incorrect. df reports the capacity of the whole filesystem containing /var/log.

Correctdu -sh /var/log

Correct. du -sh /var/log prints one readable total for the directory tree.

Incorrectls -lh /var/log

Incorrect. ls -lh shows immediate entries rather than a recursive total.

Incorrectfree -h /var/log

Incorrect. free reports memory usage, not directory usage.

An example you can run in a temporary verification environment.

du -sh /var/log 2>/dev/null

/var/logの合計使用量とパス。値は環境により異なる

Environment: GNU coreutils du / 読み取り操作
Prefer help or version output and a disposable device when testing storage commands.
Formatting, repair, and mount changes can affect data or availability.

Foundation review

Directory usage and filesystem free space are related but measured at different layers.

Account for permissions, sparse files, and open deleted files when interpreting totals.

Question IDKL-101-591

EnvironmentGNU coreutils du / 読み取り操作

Last technical review2026-08-13

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