It came across to me when I tried to recovered some of my files last night.I googling and I found such simple way of recovering files.Maybe some of you got other ways and you also can share it with me here too.
The software called photorec aka testdisk.
1)Just install via
#apt-get install testdisk
2)To run the app
#photorec /d restore
3)Select the partition and filesystem.
For Selection of filename, choose "File Opt" in the Menu section and tick ( X )
Then click " Enter " - it will return to the Main Menu
Then please select " Search " and press Enter
and the process of recovering will be done...
--EOT--