# 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/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
$
cheat.sh
tldr