Recover ext3 using Ext3grep.

We all know that after we delete the file or directory, it remains physically intact until it is being overwritten by any other file or directory.
In Ext3 file system, We can use Ext3grep utility to retrieve deleted files from the Linux hard drive. It is actually a Linux utility, which is able to retrieve completely deleted files from Ext3 file system volumes.
Using this utility is completely safe as it does not overwrite data on the disk.
Although, the Ext3grep is a quite significant and useful utility to recover lost Linux data, but it has some disadvantages as well. This tool can not recover files that are larger than 2 GB in size and can not
retrieve files that are deleted due to any other reason.

Please find some links for more information.

http://www.linuxquestions.org/questions/linux-software-2/how-to-recover-deleted-files-when-rm-command-was-used-i-recovered-using-ext3grep-810061/

http://www.xs4all.nl/~carlo17/howto/undelete_ext3.html

http://prefetch.net/blog/index.php/2009/03/29/recovering-deleted-files-with-ext3grep/