# fsck

> Check the integrity of a filesystem or repair it. The filesystem should be unmounted at the time the command is run.
> More information: <https://manned.org/fsck>.

- Check filesystem `/dev/sdX`, reporting any damaged blocks:

`fsck {{/dev/sdX}}`

- Check filesystem `/dev/sdX`, reporting any damaged blocks and interactively letting the user choose to repair each one:

`fsck -r {{/dev/sdX}}`

- Check filesystem `/dev/sdX`, reporting any damaged blocks and automatically repairing them:

`fsck -a {{/dev/sdX}}`