Linux fsck Command

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The Linux fsck (full English spelling: file system check) command is used to check and repair Linux file systems and can check and repair one or more Linux file systems at the same time.

Syntax

fsck [-sACVRP] [-t fstype] [--] [fsck-options] filesys [...]

Parameters :

• filesys : device name (eg./dev/sda1) Mount point (eg. / or /usr)
• -t : Specify the type of the file system, if in /etc/If it is already defined in fstab or supported by the kernel itself, this parameter does not need to be added
• -s : Execute fsck instructions sequentially to check
• -A : For/etc/Check all partitions listed in fstab
• -C : Display the complete check progress
• -d : Print e2debug results of fsck
• -p : At the same time, there are -When A condition is met, multiple fsck checks are executed together
• -R : At the same time, there are -Omit when A condition is met / Do not check
• -V : Detailed display mode
• -a : If there is an error in the check, it will be automatically repaired
• -r : If there is an error in the check, the user will answer whether to repair

Online Examples

Check the msdos file system /dev/hda5 Is it normal? If there is an exception, it will be automatically repaired:

fsck -t msdos -a /dev/hda5

Note This command can be combined with /etc/For a better understanding, refer to the inter-references of fstab.

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