filefrag man page on aLinux

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FILEFRAG(8)							   FILEFRAG(8)

NAME
       filefrag - report on file fragmentation

SYNOPSIS
       filefrag [ -Bbsvx ] [ files...  ]

DESCRIPTION
       filefrag	 reports  on  how badly fragmented a particular file might be.
       It makes allowances for indirect blocks for ext2 and ext3  filesystems,
       but can be used on files for any filesystem.

       The  filefrag  program initially attempts to get the extent information
       using FIEMAP ioctl which is more efficient and faster.	If  FIEMAP  is
       not supported then filefrag will fall back to using FIBMAP.

OPTIONS
       -B     Force  the  use  of the older FIBMAP ioctl instead of the FIEMAP
	      ioctl for testing purposes.

       -b     Use 1024 byte blocksize for the output.

       -s     Sync the file before requesting the mapping.

       -v     Be verbose when checking for file fragmentation.

       -x     Display mapping of extended attributes.

AUTHOR
       filefrag was written by Theodore Ts'o <tytso@mit.edu>.

E2fsprogs version 1.41.12	   May 2010			   FILEFRAG(8)
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