dumpe2fs man page on CentOS

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DUMPE2FS(8)							   DUMPE2FS(8)

NAME
       dumpe2fs - dump ext2/ext3 filesystem information

SYNOPSIS
       dumpe2fs [ -bfhixV ] [ -ob superblock ] [ -oB blocksize ] device

DESCRIPTION
       dumpe2fs	 prints	 the  super block and blocks group information for the
       filesystem present on device.

       dumpe2fs is similar to Berkeley's dumpfs program for the BSD Fast  File
       System.

OPTIONS
       -b     print the blocks which are reserved as bad in the filesystem.

       -ob superblock
	      use  the	block  superblock when examining the filesystem.  This
	      option is not usually needed except by a filesystem  wizard  who
	      is examining the remains of a very badly corrupted filesystem.

       -oB blocksize
	      use  blocks  of  blocksize  bytes when examining the filesystem.
	      This option is not usually needed except by a filesystem	wizard
	      who  is examining the remains of a very badly corrupted filesys‐
	      tem.

       -f     force dumpe2fs to display a filesystem even though it  may  have
	      some  filesystem feature flags which dumpe2fs may not understand
	      (and which can cause some of dumpe2fs's display to be suspect).

       -h     only display the superblock information and not any of the block
	      group descriptor detail information.

       -i     display  the  filesystem	data  from  an	image  file created by
	      e2image, using device as the pathname to the image file.

       -x     print the detailed group information block numbers in  hexadeci‐
	      mal format

       -V     print the version number of dumpe2fs and exit.

BUGS
       You  need  to  know the physical filesystem structure to understand the
       output.

AUTHOR
       dumpe2fs was written by Remy Card <Remy.Card@linux.org>.	  It  is  cur‐
       rently being maintained by Theodore Ts'o <tytso@alum.mit.edu>.

AVAILABILITY
       dumpe2fs	 is  part  of  the  e2fsprogs  package	and  is available from
       http://e2fsprogs.sourceforge.net.

SEE ALSO
       e2fsck(8), mke2fs(8), tune2fs(8)

E2fsprogs version 1.39		   May 2006			   DUMPE2FS(8)
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