fsck linux command

fsck

fsck [options] [filesystem]

System administration command. Call the filesystem checker for the appropriate system type, to check and repair filesystems. If a filesystem is consistent, the number of files, number of blocks used, and number of blocks free are reported. If a filesystem is inconsistent, fsck prompts before each correction is attempted. fsck's exit code can be interpreted as the sum of all of those conditions that apply:

Errors were found and corrected.

Reboot suggested.

Errors were found but not corrected.

fsck encountered an operational error.

fsck was called incorrectly.

A shared library error was detected.

Options

Pass all subsequent options to filesystem-specific checker. All options that fsck doesn't recognize will also be passed.

-r

Interactive mode; prompt before making any repairs.

-s

Serial mode.

-t fstype

Specify the filesystem type. Do not check filesystems of any other type.

-A

Check all filesystems listed in /etc/fstab.

-N

Suppress normal execution; just display what would be done.

-R

Meaningful only with -A: check all filesystems listed in /etc/fstab except the root filesystem.

-T

Suppress printing of title.

-V

Verbose mode.