Unmounting a filesystem | LinuC Level 1 101 Exam original practice question

1.05.3Basic

Safely detach the filesystem mounted at /srv/docs.

No process is using it.

Which command is appropriate?

Hint 1: Focus on the requirement

Choose the command that detaches a mounted filesystem rather than deleting its directory.

Hint 2: Key terms

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

Detailed explanation

Correctumount /srv/docs

Correct. umount /srv/docs detaches the mounted filesystem.

Incorrectmount /srv/docs

Incorrect. mount attaches a filesystem.

Incorrectrm -rf /srv/docs

Incorrect. Removing the directory does not unmount the filesystem.

Incorrectswapoff /srv/docs

Incorrect. swapoff is for swap areas rather than ordinary filesystems.

An example you can run in a temporary verification environment.

umount --help | sed -n '1,14p'

filesystemをunmountする使用法

Environment: util-linux umount / ヘルプ表示のみ
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

Normal unmounting is safer than forcing a busy filesystem to detach.

Find open files and working directories before using force or lazy options.

Question IDKL-101-586

Environmentutil-linux umount / ヘルプ表示のみ

Last technical review2026-08-13

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