"Go" linux dumpe2fs command

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Command name
DUMPE2FS-Displays EXT2/EXT3/EXT4 file system information.

DUMPE2FS command syntax
DUMPE2FS [-BFHIXV] [-o superblock=superblock ] [-o blocksize=blocksize ] device
The syntax looks more complicated, and you can see the following common command options and examples directly.

DUMPE2FS Command Description
Displays the Super block and block group information for the file system in device .

DUMPE2FS Common Command Options　　

Options	Describe
-B	Print bad blocks in the file system
-O	Infrequently used, when checking for severe damage to the file system, specify
-F	Force display of all information, even if the DUMPE2FS is not recognized for some file system functional identifiers.
-I	Displays the image file system information. device Specifies the path to the image file
-H	Show only Super block information
-X	Displays the number of grouped blocks in hexadecimal
-V	Displays the version number of the DUMPE2FS and launches

DUMPE2FS Command Instances

DUMPE2FS View file system information for/DEV/SDA1.

[[email protected] ~]# dumpe2fs/dev/sda1dumpe2fs 1.41.12 (17-may-2010) Filesystem volume name: <none>last mo unted on:/bootfilesystem Uuid:d1488e05-0442-4514-82ff-5f877a51df23filesystem Magic Number:0xef53file System Revision #: 1 (dynamic) Filesystem features:has_journal ext_attr resize_inode dir_index filetype Needs_reco Very extent FLEX_BG Sparse_super huge_file uninit_bg dir_nlink extra_isizefilesystem flags:signed_directory_hashd Efault Mount Options:user_xattr aclfilesystem state:cleanerrors behavior:continuefilesystem OS type              : Linuxinode count:128016block count:512000reserved block Count:25600free blocks:            465996Free inodes:127978first block:1block size:1024fragment Size:         1024Reserved GDT blocks:256blocks per group:8192fragments per group:8192inodes per group: 2032Inode blocksPer Group:254flex block Group Size:16filesystem created:tue APR 04:22:51 2014Last Mount Time:tu      e Sep 01:22:26 2014Last write time:tue Sep 01:22:26 2014Mount count:5maximum mount Count:          -1last checked:tue Apr 04:22:51 2014Check interval:0 (<none>) Lifetime writes: Mbreserved blocks uid:0 (user root) Reserved blocks gid:0 (group root) First Inode:11inode siz E:128journal Inode:8default directory hash:half_md4directory Hash seed:f562772f-0825-4 753-a0b1-5bc295821472journal Backup:inode blocksjournal Features: (none) Journal Size:8mjou rnal length:8192journal sequence:0x00000018journal start:0group 0: (Blocks 1-8192) [ITABLE _zeroed] Checksum 0xcdec, unused inodes 2015 ... a little bit of .......

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