Linux command
fsck 命令
安全
权限或系统影响较大，执行前请核对目标。
常用示例
Check
sudo fsck /dev/sdXN
Example
sudo fsck -r /dev/sdXN
Automatically
sudo fsck -a /dev/sdXN
Example
sudo fsck -A
Force
sudo fsck -f /dev/sdXN
Example
sudo fsck -C /dev/sdXN
说明
fsck checks and repairs Linux filesystems. It is a front-end that calls filesystem-specific checking utilities (fsck.ext4, fsck.xfs, etc.). The filesystem should be unmounted when running fsck.
参数
- -a
- Automatically repair without prompting
- -A
- Check all filesystems listed in /etc/fstab
- -C FD
- Show progress bar
- -f
- Force check even if filesystem seems clean
- -M
- Do not check mounted filesystems
- -N
- Dry run - show what would be done
- -P
- Check filesystems in parallel (with -A)
- -R
- Skip root filesystem (with -A)
- -r _fd_
- Report statistics for each fsck upon completion (exit status, time, memory)
- -l
- Lock the whole-disk device with an exclusive flock. Can only be used with one device (mutually exclusive with -A).
- -s
- Serialize fsck operations
- -T
- Do not show title on startup
- -t TYPE
- Specify filesystem type
- -V
- Verbose output
- -y
- Answer "yes" to all questions
- -n
- Answer "no" to all questions (read-only check)
FAQ
What is the fsck command used for?
fsck checks and repairs Linux filesystems. It is a front-end that calls filesystem-specific checking utilities (fsck.ext4, fsck.xfs, etc.). The filesystem should be unmounted when running fsck.
How do I run a basic fsck example?
Run `sudo fsck /dev/sdXN` in a terminal, then adjust file names, paths, flags, or remote targets for your system.
What does -a do in fsck?
Automatically repair without prompting