extundelete - utility to undelete files from an ext3 or ext4 partition.

       extundelete was written by Nic Case <number9652@users.sourceforge.net> Copyright (C) 2009, 2012

       This  manual  page  was written by Elías Alejandro Año Mendoza <ealmdz@gmail.com>, for the Debian project
       (and may be used by others).

                                               September 29, 2010                                 EXTUNDELETE(1)

extundelete is a utility that can recover deleted files from an ext3 or ext4 partition
       extundelete  uses the information stored in the partition's journal to attempt to recover a file that has
       been deleted from the partition.
       There is no guarantee that any particular file will be able to be undeleted, so always try to have a good
       backup system in place, or at least put one in place after recovering your files!

       extundelete - utility to undelete files from an ext3 or ext4 partition.

--version
              Prints the version number of extundelete.

       --help Print a brief usage summary for extundelete.

       Partitionname
              Name of the partition that has deleted files, such as /dev/sda3.
              Could also be the file name of a copy of the partition, such as that made with dd.

       --superblock
              Prints information about the filesystem from the superblock.

       --journal--superblock
              Prints information about the journal from the journal's superblock.

       --inode#
              Prints the information from the inode number of the filesystem given, such as "--inode 2".

       --block#
              Prints the contents of the block, called as "--block 9652".

       --restore-filepath/to/deleted/file
              Attempts to restore the file which was deleted at the given filename,  called  as  "--restore-file
              dirname/filename".

       --restore-inode#
              Used to restore inodes by number, called as "--restore-inode 2569".
              Also accepts a list of inodes separated by only commas, such as "--restore-inode 2569,5692,6925".

       --restore-filesfilename
              Restores a list of files. First, construct a list of files in the same style as would be
              used in the --restore-file option, and save it to the file "filename".
              Then, this option may be used to attempt to restore those files with a single call to extundelete.
              This form also reduces redundancy from multiple calls parsing the journal multiple times.

       --restore-all
              Restores  all  files  possible  to  undelete to their names before deletion, when possible.  Other
              files are restored to a filename like "file.NNNN".

       --restore-directorypath/of/directory
              Restores all files possible to link to specified directory to their names  before  deletion,  when
              possible.

       -jjournal_dev
              Specifies the device that is the external journal of the file system.

       -bblock_number
              Specifies the block number of the backup superblock to be used when opening the file system.

       -Bblock_size
              Specifies the block size of the partition to be used when opening the file system.

       --beforedate
              Only restore files deleted before the date specified, which should be in the form of the number of
              seconds since the UNIX epoch.  Use a shell command like
              $ date -d "Aug 1 9:02" +%s
              to  convert  a human-readable date to the proper format. The conversion from the number of seconds
              to a readable format may be found by using either of the following:
              $ date -d@1234567890
              $ perl -le "print scalar localtime 1234567890"

       --afterdate
              Only restore files deleted after the date specified, which should be in the form of the number  of
              seconds since the UNIX epoch.
              See the notes for the --before option for more information.

extundelete [options] device-file...