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syntax: markdown
tags: [tldr, common]
source: https://github.com/tldr-pages/tldr.git
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# umount

> Unlink a filesystem from its mount point, making it no longer accessible.
> A filesystem cannot be unmounted when it is busy.
> More information: <https://man.openbsd.org/umount>.

- Unmount a filesystem, by passing the path to the source it is mounted from:

`umount {{path/to/device_file}}`

- Unmount a filesystem, by passing the path to the target where it is mounted:

`umount {{path/to/mounted_directory}}`

- Unmount all mounted filesystems (except the `proc` filesystem):

`umount -a`
