Displaying filesystem usage readably | LinuC Level 1 101 Exam original practice question

1.05.3Basic

Show total, used, available, and percentage usage for each mounted filesystem in human-readable units.

Which command is appropriate?

Hint 1: Focus on the requirement

Choose the filesystem-level capacity report and its human-readable display option.

Hint 2: Key terms

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

df -h: Reports mounted filesystem totals and usage in readable units.
Filesystem capacity: Total, used, available, and percentage space managed by a filesystem.
du: Aggregates file and directory usage.
-h: An option for human-readable size units.

Detailed explanation

Correctdf -h

Correct. df -h displays mounted filesystem capacity and usage.

Incorrectdu -h

Incorrect. du summarizes files and directories within a tree.

Incorrectlsblk -b

Incorrect. lsblk -b shows block-device sizes in bytes, not filesystem usage percentages.

Incorrectfree -h

Incorrect. free -h reports RAM and swap usage.

An example you can run in a temporary verification environment.

df -h | sed -n '1,6p'

Filesystem、Size、Used、Avail、Use%、Mounted onの一覧

Environment: GNU coreutils df / 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

df answers filesystem capacity; du answers how a directory tree consumes it.

Investigate deleted-but-open files when df and du disagree.

Question IDKL-101-590

EnvironmentGNU coreutils df / 読み取り操作

Last technical review2026-08-13

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