How to undelete files

PhotoRec 6.11, Data Recovery Utility, April 2009
Christophe GRENIER <grenier@cgsecurity.org>
http://www.cgsecurity.org

  PhotoRec is free software, and
comes with ABSOLUTELY NO WARRANTY.

Select a media (use Arrow keys, then press Enter):
Disk /dev/sda - 160 GB / 149 GiB (RO) - ATA INTEL SSDSA2M160
Disk /dev/mapper/disk--tdd-root - 153 GB / 142 GiB (RO)
Disk /dev/mapper/disk--tdd-swap_1 - 6530 MB / 6228 MiB (RO)
Disk /dev/mapper/sda5_crypt - 159 GB / 148 GiB (RO)

I use PhotoRec which has a nice terminal gui application that will find your deleted files.

Install the application

apt-get install photorec