fsck

Check the integrity of a filesystem or repair it. The filesystem should be unmounted at the time the command is run.

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• Check filesystem /dev/sdXN, reporting any damaged blocks:

sudo fsck {/dev/sdXN}

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

sudo fsck -r {/dev/sdXN}

• Check filesystem /dev/sdXN, reporting any damaged blocks and automatically repairing them:

sudo fsck -a {/dev/sdXN}

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