Linux commands: Mkfs, MKE2FS, Blkid, E2label, TUNE2FS, DUMPE2FS, fsck, e2fsck

MKFS Introduction to Commands:

Create a Linux file system and re-create the file system to corrupt the original file.

File system type Mkfs-t ext2 =mkfs.ext2

Mkfs.ext3=mkfs-t ext3 mkfs-t vfat =mkfs.vfat

EXT2 EXT3 EXT4 FAT32

1 . Command format:

USAGE:MKFS.EXT2 [-c|-l filename] [-B block-size] [-F fragment-size]

Mk fs.ext3=mkfs-t ext3 mkfs-t vfat =mkfs.vfat

2 . Command function:

Create a file system and format the hard disk.

3 . Command parameters:

-T EXT3/DEV/SDA5 format partition SDA5 to EXT3 format

Commands that specialize in managing EXT series files: mke2fs

-j: Creating a ext3 Type file system

-B Size: Specifies the block size, which defaults to 4096; the available value is 1024,2048.

-L LABEL: Specifies the partition volume label;

-M #: Specifies the percentage of blocks reserved for super users

-I #: To specify how many bytes of space to create an inode, default to 8192,

The values given here should be 2 times the size of the block n times;

-N #: Specifies the number of inode;

-F: Force file system creation;

-E: Used to specify additional file system types;

blkid: Used to query or view the related properties of a disk partition Blkid/dev/sda5

[Email protected] test]# BLKID/DEV/SDA5

/dev/sda5:uuid= "550e1481-68da-44ea-b928-d3d2bf751da0" type= "Ext4"

E2label: Used to view or define volume labels

[[email protected] test]# E2LABEL/DEV/SDA5 here sda5 not set label

E2label: Device file volume label name change partition device volume label

[[email protected] test]# E2LABEL/DEV/SDA5 hellsda5 set New Volume label

[Email protected] test]# E2LABEL/DEV/SDA5

HELLSDA5 has set the new label.

tune2fs: Adjusting the file system's related properties

-j: No damage to the original data, the EX2T upgrade to ext3 (can not be lowered) tune2fs-j/dev/sda5

-L LABEL: Sets or modifies the volume label Tune2fs-l volume label/dev/sda5

-M #: Adjust the reserved percentage;

-R #: Specifies the number of reserved blocks;

-O: Set default mount Options

ACL default mount support ACL

-C #: Specifies that the mount count reaches # times after the self-test, 0 or 1 means to turn off this function;

-I #: The number of days to use per mount after self-test, 0 or 1 means to turn off this feature;

-L: Displays information stored in the Super block; Tune2fs-l/dev/sda5

DUMPE2FS: Displays detailed information about the file system;

Dumpe2fs/dev/sda5

-H: Displays only information stored within the Super block; Dumpe2fs-h/dev/sda5

fsck: Checking and repairing the Linux file system

-T type: Specifies that the file system type is fixed and does not specify that the current file system type will be selected automatically

-A: Automatically repair the file system, if not add-a each step will prompt whether to execute.

e2fsck: Dedicated to repairing Ext2/ext3 file system

-F: mandatory detection;

-P: Automatic repair;

4 . Command instance:

1. mkfs-t file type hard disk partition format a hard disk partition into a format

MKFS-T ext3/dev/sda2 Format the partition SDA2 partition as ext3 format.

2, mke2fs-j-B 2048/dev/sda5 format the SDA5 partition as ext3 format and specify a block size of 2048

3, mke2fs-m 3/dev/sda3 reserved 3% of the capacity block for the super-user use.

This article is from the "Learn Linux history" blog, please be sure to keep this source http://woyaoxuelinux.blog.51cto.com/5663865/1867108

Linux commands: Mkfs, MKE2FS, Blkid, E2label, TUNE2FS, DUMPE2FS, fsck, e2fsck